Removed invitation code from simplex plugins, cleaned up Gmail plugin.

api/net/sf/briar/api/plugins/Plugin.java

@@ -35,7 +35,4 @@ public interface Plugin {
 	 * the plugin may exclude the given contacts from polling.
 	 */
 	void poll(Collection<ContactId> connected);
-
-	/** Returns true if the plugin supports exchanging invitations. */
-	boolean supportsInvitations();
 }

api/net/sf/briar/api/plugins/PluginManager.java

@@ -3,13 +3,13 @@ package net.sf.briar.api.plugins;
 import java.util.Collection;
 
 import net.sf.briar.api.plugins.duplex.DuplexPlugin;
-import net.sf.briar.api.plugins.simplex.SimplexPlugin;
 
 public interface PluginManager {
 
 	/**
 	 * Starts the plugins and returns the number of plugins successfully
-	 * started.
+	 * started. This method must not be called until the database has been
+	 * opened.
 	 */
 	int start();
 
@@ -19,8 +19,5 @@ public interface PluginManager {
 	int stop();
 
 	/** Returns any duplex plugins that support invitations. */
-	Collection<DuplexPlugin> getDuplexInvitationPlugins();
-
-	/** Returns any simplex plugins that support invitations. */
-	Collection<SimplexPlugin> getSimplexInvitationPlugins();
+	Collection<DuplexPlugin> getInvitationPlugins();
 }

api/net/sf/briar/api/plugins/duplex/DuplexPlugin.java

@@ -14,6 +14,9 @@ public interface DuplexPlugin extends Plugin {
 	 */
 	DuplexTransportConnection createConnection(ContactId c);
 
+	/** Returns true if the plugin supports exchanging invitations. */
+	boolean supportsInvitations();
+
 	/**
 	 * Starts the invitation process from the inviter's side. Returns null if
 	 * no connection can be established within the given timeout.

api/net/sf/briar/api/plugins/simplex/SimplexPlugin.java

 package net.sf.briar.api.plugins.simplex;
 
 import net.sf.briar.api.ContactId;
-import net.sf.briar.api.crypto.PseudoRandom;
 import net.sf.briar.api.plugins.Plugin;
 
 /** An interface for transport plugins that support simplex communication. */
@@ -20,29 +19,4 @@ public interface SimplexPlugin extends Plugin {
 	 * could not be created.
 	 */
 	SimplexTransportWriter createWriter(ContactId c);
-
-	/**
-	 * Starts the invitation process from the inviter's side. Returns null if
-	 * no connection can be established within the given timeout.
-	 */
-	SimplexTransportWriter sendInvitation(PseudoRandom r, long timeout);
-
-	/**
-	 * Starts the invitation process from the invitee's side. Returns null if
-	 * no connection can be established within the given timeout.
-	 */
-	SimplexTransportReader acceptInvitation(PseudoRandom r, long timeout);
-
-	/**
-	 * Continues the invitation process from the invitee's side. Returns null
-	 * if no connection can be established within the given timeout.
-	 */
-	SimplexTransportWriter sendInvitationResponse(PseudoRandom r, long timeout);
-
-	/**
-	 * Continues the invitation process from the inviter's side. Returns null
-	 * if no connection can be established within the given timeout.
-	 */
-	SimplexTransportReader acceptInvitationResponse(PseudoRandom r,
-			long timeout);
 }

components/net/sf/briar/plugins/PluginManagerImpl.java

@@ -73,10 +73,6 @@ class PluginManagerImpl implements PluginManager {
 		duplexPlugins = new ArrayList<DuplexPlugin>();
 	}
 
-	public synchronized int getPluginCount() {
-		return simplexPlugins.size() + duplexPlugins.size();
-	}
-
 	public synchronized int start() {
 		Set<TransportId> ids = new HashSet<TransportId>();
 		// Instantiate and start the simplex plugins
@@ -184,7 +180,7 @@ class PluginManagerImpl implements PluginManager {
 		return stopped;
 	}
 
-	public Collection<DuplexPlugin> getDuplexInvitationPlugins() {
+	public Collection<DuplexPlugin> getInvitationPlugins() {
 		Collection<DuplexPlugin> supported = new ArrayList<DuplexPlugin>();
 		synchronized(this) {
 			for(DuplexPlugin d : duplexPlugins) {
@@ -194,16 +190,6 @@ class PluginManagerImpl implements PluginManager {
 		return supported;
 	}
 
-	public Collection<SimplexPlugin> getSimplexInvitationPlugins() {
-		Collection<SimplexPlugin> supported = new ArrayList<SimplexPlugin>();
-		synchronized(this) {
-			for(SimplexPlugin s : simplexPlugins) {
-				if(s.supportsInvitations()) supported.add(s);
-			}
-		}
-		return supported;
-	}
-
 	private abstract class PluginCallbackImpl implements PluginCallback {
 
 		protected volatile TransportId id = null;

components/net/sf/briar/plugins/email/GmailPlugin.java

@@ -14,6 +14,7 @@ import java.util.logging.Logger;
 
 import javax.activation.DataHandler;
 import javax.activation.DataSource;
+import javax.mail.Authenticator;
 import javax.mail.Flags;
 import javax.mail.Flags.Flag;
 import javax.mail.Folder;
@@ -34,7 +35,6 @@ import javax.mail.util.ByteArrayDataSource;
 import net.sf.briar.api.ContactId;
 import net.sf.briar.api.TransportConfig;
 import net.sf.briar.api.TransportProperties;
-import net.sf.briar.api.crypto.PseudoRandom;
 import net.sf.briar.api.plugins.simplex.SimplexPlugin;
 import net.sf.briar.api.plugins.simplex.SimplexPluginCallback;
 import net.sf.briar.api.plugins.simplex.SimplexTransportReader;
@@ -42,7 +42,7 @@ import net.sf.briar.api.plugins.simplex.SimplexTransportWriter;
 import net.sf.briar.api.protocol.TransportId;
 import net.sf.briar.util.StringUtils;
 
-public class GmailPlugin implements SimplexPlugin {
+class GmailPlugin implements SimplexPlugin {
 
 	public static final byte[] TRANSPORT_ID = StringUtils
 			.fromHexString("57ead1961d2120bbbbe8256ff9ce6ae2"
@@ -50,12 +50,11 @@ public class GmailPlugin implements SimplexPlugin {
 					+ "e8dd928ed1d7a9e7b89fd62210aa30bf");
 
 	private static final TransportId ID = new TransportId(TRANSPORT_ID);
+	private static final Logger LOG =
+			Logger.getLogger(GmailPlugin.class.getName());
+
 	private final Executor pluginExecutor;
 	private final SimplexPluginCallback callback;
-	private static final Logger LOG = Logger.getLogger(GmailPlugin.class
-			.getName());
-
-	// private static GmailTransportConnectionWriter writer;
 
 	public GmailPlugin(Executor pluginExecutor, SimplexPluginCallback callback) {
 		this.pluginExecutor = pluginExecutor;
@@ -78,15 +77,14 @@ public class GmailPlugin implements SimplexPlugin {
 		try {
 			FlagTerm ft = new FlagTerm(new Flags(Flags.Flag.SEEN), false);
 			Message msg[] = inbox.search(ft);
-			// System.out.println("Unread Messages: "+ msg.length);
-			for (final Message message : msg) {
+			for(final Message message : msg) {
 				callback.readerCreated(new SimplexTransportReader() {
 
 					public InputStream getInputStream() throws IOException {
 						try {
 							return message.getInputStream();
-						} catch (MessagingException e) {
-							if (LOG.isLoggable(Level.WARNING))
+						} catch(MessagingException e) {
+							if(LOG.isLoggable(Level.WARNING))
 								LOG.warning(e.toString());
 						}
 						return null;
@@ -97,17 +95,15 @@ public class GmailPlugin implements SimplexPlugin {
 						try {
 							message.setFlag(Flag.DELETED, recognised);
 							message.setFlag(Flag.SEEN, recognised);
-						} catch (MessagingException e) {
-							if (LOG.isLoggable(Level.WARNING))
+						} catch(MessagingException e) {
+							if(LOG.isLoggable(Level.WARNING))
 								LOG.warning(e.toString());
 						}
 					}
 				});
-
 			}
-		} catch (MessagingException e) {
-			if (LOG.isLoggable(Level.WARNING))
-				LOG.warning(e.toString());
+		} catch(MessagingException e) {
+			if(LOG.isLoggable(Level.WARNING)) LOG.warning(e.toString());
 		}
 	}
 
@@ -116,7 +112,7 @@ public class GmailPlugin implements SimplexPlugin {
 		props.setProperty("mail.store.protocol", "imaps");
 		final ArrayList<String> userPass = getAuthenticationDetails(callback
 				.getConfig());
-		if (userPass != null) {
+		if(userPass != null) {
 			try {
 				Session session = Session.getInstance(props, null);
 				Store store = session.getStore("imaps");
@@ -125,19 +121,17 @@ public class GmailPlugin implements SimplexPlugin {
 				Folder inbox = store.getFolder("Inbox");
 				inbox.open(Folder.READ_ONLY);
 				checkUnreadEmails(inbox);
-			} catch (NoSuchProviderException e) {
-				if (LOG.isLoggable(Level.WARNING))
-					LOG.warning(e.toString());
-			} catch (MessagingException e) {
-				if (LOG.isLoggable(Level.WARNING))
-					LOG.warning(e.toString());
+			} catch(NoSuchProviderException e) {
+				if(LOG.isLoggable(Level.WARNING)) LOG.warning(e.toString());
+			} catch(MessagingException e) {
+				if(LOG.isLoggable(Level.WARNING)) LOG.warning(e.toString());
 			}
 		}
 	}
 
 	public boolean connectSMTP(ContactId cid) {
 		boolean sent = false;
-		if (discoverContactEmail(cid) != null) {
+		if(discoverContactEmail(cid) != null) {
 			Properties props = new Properties();
 			props.put("mail.smtp.host", "smtp.gmail.com");
 			props.put("mail.smtp.socketFactory.port", "465");
@@ -146,19 +140,18 @@ public class GmailPlugin implements SimplexPlugin {
 			props.put("mail.smtp.auth", "true");
 			props.put("mail.smtp.port", "465");
 
-			final ArrayList<String> userPass = getAuthenticationDetails(callback
-					.getConfig());
+			final ArrayList<String> userPass =
+					getAuthenticationDetails(callback.getConfig());
 
-			if (userPass != null) {
+			if(userPass != null) {
 				Session session;
 				session = Session.getInstance(props,
-						new javax.mail.Authenticator() {
+						new Authenticator() {
 							protected PasswordAuthentication getPasswordAuthentication() {
-								return new PasswordAuthentication(userPass
-										.get(0), userPass.get(1));
+								return new PasswordAuthentication(
+										userPass.get(0), userPass.get(1));
 							}
 						});
-
 				sent = sendMessage(session, cid);
 			}
 		}
@@ -166,7 +159,6 @@ public class GmailPlugin implements SimplexPlugin {
 	}
 
 	private boolean sendMessage(Session session, ContactId cid) {
-		boolean sent = false;
 		ByteArrayOutputStream outputStream = null;
 		try {
 			Message message = new MimeMessage(session);
@@ -187,15 +179,15 @@ public class GmailPlugin implements SimplexPlugin {
 				}
 
 				public OutputStream getOutputStream() throws IOException {
-					return null;
+					return null; // FIXME
 				}
 
 				public long getCapacity() {
-					return 0;
+					return 0; // FIXME
 				}
 
 				public void dispose(boolean exception) throws IOException {
-
+					// FIXME
 				}
 			});
 
@@ -211,22 +203,18 @@ public class GmailPlugin implements SimplexPlugin {
 
 			message.setContent(mimeMultipart);
 
-			// message.setText("Test content");
-
 			Transport.send(message);
 
-			sent = true;
-			return sent;
-		} catch (MessagingException e) {
-			return sent;
+			return true;
+		} catch(MessagingException e) {
+			return false;
 		} finally {
-			if (null != outputStream) {
+			if(outputStream != null) {
 				try {
 					outputStream.close();
 					outputStream = null;
-				} catch (Exception e) {
-					if (LOG.isLoggable(Level.WARNING))
-						LOG.warning(e.toString());
+				} catch(Exception e) {
+					if(LOG.isLoggable(Level.WARNING)) LOG.warning(e.toString());
 				}
 			}
 		}
@@ -234,8 +222,8 @@ public class GmailPlugin implements SimplexPlugin {
 	}
 
 	public void stop() throws IOException {
-		synchronized (this) {
-			// close open connections
+		synchronized(this) {
+			// FIXME: Close open connections
 		}
 	}
 
@@ -251,10 +239,6 @@ public class GmailPlugin implements SimplexPlugin {
 		throw new UnsupportedOperationException();
 	}
 
-	public boolean supportsInvitations() {
-		return false;
-	}
-
 	/*
 	 * Gets the user's authentication details ArrayList.get(0) = username,
 	 * ArrayList.get(1) = password, or null if either value is null.
@@ -264,31 +248,35 @@ public class GmailPlugin implements SimplexPlugin {
 			ArrayList<String> usernamePass = new ArrayList<String>();
 			usernamePass.add(0, config.get("username"));
 			usernamePass.add(1, config.get("password"));
-			if (usernamePass.get(0) != null && usernamePass.get(1) != null)
+			if(usernamePass.get(0) != null && usernamePass.get(1) != null) {
 				return usernamePass;
-			else
+			} else {
 				return null;
-		} catch (Exception e) {
+			}
+		} catch(Exception e) {
 			return null;
 		}
 	}
 
 	/*
 	 * Looks up the contact's email address given the contactID
+	 * 
 	 * @param ContactId
+	 * 
 	 * @return String email
 	 */
 	private String discoverContactEmail(ContactId cid) {
 		try {
-			Map<ContactId, TransportProperties> remote = callback
-					.getRemoteProperties();
+			Map<ContactId, TransportProperties> remote =
+					callback.getRemoteProperties();
 			TransportProperties tp = remote.get(cid);
-			if (tp != null) {
+			if(tp != null) {
 				String address = tp.get("email");
 				return address;
-			} else
+			} else {
 				return null;
-		} catch (Exception e) {
+			}
+		} catch(Exception e) {
 			return null;
 		}
 	}
@@ -300,23 +288,4 @@ public class GmailPlugin implements SimplexPlugin {
 	public SimplexTransportWriter createWriter(ContactId c) {
 		return null;
 	}
-
-	public SimplexTransportWriter sendInvitation(PseudoRandom r, long timeout) {
-		throw new UnsupportedOperationException();
-	}
-
-	public SimplexTransportReader acceptInvitation(PseudoRandom r, long timeout) {
-		throw new UnsupportedOperationException();
-	}
-
-	public SimplexTransportWriter sendInvitationResponse(PseudoRandom r,
-			long timeout) {
-		throw new UnsupportedOperationException();
-	}
-
-	public SimplexTransportReader acceptInvitationResponse(PseudoRandom r,
-			long timeout) {
-		throw new UnsupportedOperationException();
-	}
-
 }

components/net/sf/briar/plugins/email/GmailPluginFactory.java

@@ -10,9 +10,6 @@ public class GmailPluginFactory implements SimplexPluginFactory {
 
 	public SimplexPlugin createPlugin(Executor pluginExecutor,
 			SimplexPluginCallback callback) {
-		
 		return new GmailPlugin(pluginExecutor, callback);
 	}
-
-
 }

components/net/sf/briar/plugins/email/GmailTransportConnectionWriter.java

@@ -9,16 +9,17 @@ import javax.microedition.io.StreamConnection;
 
 import net.sf.briar.api.plugins.simplex.SimplexTransportWriter;
 
-public class GmailTransportConnectionWriter implements SimplexTransportWriter {
+class GmailTransportConnectionWriter implements SimplexTransportWriter {
 
-	private static final Logger LOG = Logger.getLogger(GmailTransportConnectionWriter.class.getName());
+	private static final Logger LOG =
+			Logger.getLogger(GmailTransportConnectionWriter.class.getName());
 	private final StreamConnection stream;
 	private final long capacity = 25 * 1000 * 1000;
-	
+
 	public GmailTransportConnectionWriter(StreamConnection stream) {
 		this.stream = stream;
 	}
-	
+
 	public long getCapacity() {
 		return capacity;
 	}
@@ -38,5 +39,4 @@ public class GmailTransportConnectionWriter implements SimplexTransportWriter {
 			if(LOG.isLoggable(Level.WARNING)) LOG.warning(e.toString());
 		}
 	}
-
 }

components/net/sf/briar/plugins/file/FileListener.java

-package net.sf.briar.plugins.file;
-
-import java.io.File;
-import java.util.concurrent.CountDownLatch;
-import java.util.concurrent.TimeUnit;
-
-class FileListener {
-
-	private final String filename;
-	private final long end;
-	private final CountDownLatch finished = new CountDownLatch(1);
-
-	private volatile File file = null;
-
-	FileListener(String filename, long timeout) {
-		this.filename = filename;
-		end = System.currentTimeMillis() + timeout;
-	}
-
-	File waitForFile() throws InterruptedException {
-		finished.await(end - System.currentTimeMillis(), TimeUnit.MILLISECONDS);
-		return file;
-	}
-
-	void addFile(File f) {
-		if(filename.equals(f.getName())) {
-			file = f;
-			finished.countDown();
-		}
-	}
-}

components/net/sf/briar/plugins/file/FilePlugin.java

@@ -11,14 +11,12 @@ import java.util.logging.Level;
 import java.util.logging.Logger;
 
 import net.sf.briar.api.ContactId;
-import net.sf.briar.api.crypto.PseudoRandom;
 import net.sf.briar.api.plugins.PluginExecutor;
 import net.sf.briar.api.plugins.simplex.SimplexPlugin;
 import net.sf.briar.api.plugins.simplex.SimplexPluginCallback;
 import net.sf.briar.api.plugins.simplex.SimplexTransportReader;
 import net.sf.briar.api.plugins.simplex.SimplexTransportWriter;
 import net.sf.briar.api.transport.TransportConstants;
-import net.sf.briar.util.StringUtils;
 
 import org.apache.commons.io.FileSystemUtils;
 
@@ -32,10 +30,6 @@ public abstract class FilePlugin implements SimplexPlugin {
 
 	protected volatile boolean running = false;
 
-	private final Object listenerLock = new Object();
-
-	private FileListener listener = null; // Locking: listenerLock
-
 	protected abstract File chooseOutputDirectory();
 	protected abstract Collection<File> findFilesByName(String filename);
 	protected abstract void writerFinished(File f);
@@ -94,75 +88,6 @@ public abstract class FilePlugin implements SimplexPlugin {
 		pluginExecutor.execute(new ReaderCreator(f));
 	}
 
-	public SimplexTransportWriter sendInvitation(PseudoRandom r, long timeout) {
-		if(!running) return null;
-		return createWriter(createInvitationFilename(r, false));
-	}
-
-	public SimplexTransportReader acceptInvitation(PseudoRandom r,
-			long timeout) {
-		if(!running) return null;
-		String filename = createInvitationFilename(r, false);
-		return createInvitationReader(filename, timeout);
-	}
-
-	public SimplexTransportWriter sendInvitationResponse(PseudoRandom r,
-			long timeout) {
-		if(!running) return null;
-		return createWriter(createInvitationFilename(r, true));
-	}
-
-	public SimplexTransportReader acceptInvitationResponse(PseudoRandom r,
-			long timeout) {
-		if(!running) return null;
-		String filename = createInvitationFilename(r, true);
-		return createInvitationReader(filename, timeout);
-	}
-
-	private SimplexTransportReader createInvitationReader(String filename,
-			long timeout) {
-		Collection<File> files;
-		// FIXME: Avoid making alien calls with a lock held
-		synchronized(listenerLock) {
-			// Find any matching files that have already arrived
-			files = findFilesByName(filename);
-			if(files.isEmpty()) {
-				// Wait for a matching file to arrive
-				listener = new FileListener(filename, timeout);
-				File f;
-				try {
-					f = listener.waitForFile();
-					if(f != null) files.add(f);
-				} catch(InterruptedException e) {
-					if(LOG.isLoggable(Level.INFO))
-						LOG.info("Interrupted while waiting for file");
-					Thread.currentThread().interrupt();
-				}
-				listener = null;
-			}
-		}
-		// Return the first match that can be opened
-		for(File f : files) {
-			try {
-				FileInputStream in = new FileInputStream(f);
-				return new FileTransportReader(f, in, FilePlugin.this);
-			} catch(IOException e) {
-				if(LOG.isLoggable(Level.WARNING)) LOG.warning(e.toString());
-			}
-		}
-		return null;
-	}
-
-	private String createInvitationFilename(PseudoRandom r, boolean response) {
-		String digits = StringUtils.toHexString(r.nextBytes(3));
-		return String.format("%c%s.dat", response ? 'b' : 'a', digits);
-	}
-
-	// Package access for testing
-	boolean isPossibleInvitationFilename(String filename) {
-		return filename.toLowerCase().matches("[ab][0-9a-f]{6}.dat");
-	}
-
 	private class ReaderCreator implements Runnable {
 
 		private final File file;
@@ -172,13 +97,6 @@ public abstract class FilePlugin implements SimplexPlugin {
 		}
 
 		public void run() {
-			String filename = file.getName();
-			if(isPossibleInvitationFilename(filename)) {
-				// FIXME: Avoid making alien calls with a lock held
-				synchronized(listenerLock) {
-					if(listener != null) listener.addFile(file);
-				}
-			}
 			if(isPossibleConnectionFilename(file.getName())) {
 				try {
 					FileInputStream in = new FileInputStream(file);

components/net/sf/briar/plugins/file/RemovableDrivePlugin.java

@@ -65,10 +65,6 @@ implements RemovableDriveMonitor.Callback {
 		throw new UnsupportedOperationException();
 	}
 
-	public boolean supportsInvitations() {
-		return true;
-	}
-
 	@Override
 	protected File chooseOutputDirectory() {
 		try {