Merge remote-tracking branch 'upstream/development' into fix_typo

AndroidManifest.xml

@@ -1,8 +1,8 @@
 <?xml version="1.0" encoding="utf-8"?>
 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
     package="eu.siacs.conversations"
-    android:versionCode="24"
+    android:versionCode="26"
-    android:versionName="0.6-alpha" >
+    android:versionName="0.7-alpha" >
 
     <uses-sdk
         android:minSdkVersion="14"

CHANGELOG.md

@@ -1,5 +1,12 @@
 ###Changelog
 
+####Version 0.6
+* Support for server side avatars
+* save images in gallery
+* show contact name and picture in non-anonymous conferences
+* reworked account creation
+* various bug fixes
+
 ####Version 0.5.2
 * minor bug fixes
 

src/eu/siacs/conversations/generator/AbstractGenerator.java

@@ -12,23 +12,13 @@ public abstract class AbstractGenerator {
 	public final String[] FEATURES = { "urn:xmpp:jingle:1",
 			"urn:xmpp:jingle:apps:file-transfer:3",
 			"urn:xmpp:jingle:transports:s5b:1",
-			"urn:xmpp:jingle:transports:ibb:1",
+			"urn:xmpp:jingle:transports:ibb:1", "urn:xmpp:receipts",
-			"urn:xmpp:receipts",
+			"urn:xmpp:chat-markers:0", "http://jabber.org/protocol/muc",
-			"urn:xmpp:chat-markers:0",
+			"jabber:x:conference", "http://jabber.org/protocol/caps",
-			"http://jabber.org/protocol/muc",
-			"jabber:x:conference",
-			"http://jabber.org/protocol/caps",
 			"http://jabber.org/protocol/disco#info",
 			"urn:xmpp:avatar:metadata+notify" };
-	public final String IDENTITY_NAME = "Conversations 0.5";
+	public final String IDENTITY_NAME = "Conversations 0.6";
 	public final String IDENTITY_TYPE = "phone";
-	/*public final String[] FEATURES = { "http://jabber.org/protocol/muc","http://jabber.org/protocol/disco#info", "http://jabber.org/protocol/disco#items", "http://jabber.org/protocol/caps" };
-	
-	public final String IDENTITY_NAME = "Exodus 0.9.1";
-	public final String IDENTITY_TYPE = "pc";*/
-	
-	
-	
 
 	public String getCapHash() {
 		StringBuilder s = new StringBuilder();
@@ -36,8 +26,7 @@ public abstract class AbstractGenerator {
 		MessageDigest md = null;
 		try {
 			md = MessageDigest.getInstance("SHA-1");
-	    }
+		} catch (NoSuchAlgorithmException e) {
-	    catch(NoSuchAlgorithmException e) {
 			return null;
 		}
 		List<String> features = Arrays.asList(FEATURES);

src/eu/siacs/conversations/services/XmppConnectionService.java

@@ -49,6 +49,7 @@ import eu.siacs.conversations.xml.Element;
 import eu.siacs.conversations.xmpp.OnBindListener;
 import eu.siacs.conversations.xmpp.OnContactStatusChanged;
 import eu.siacs.conversations.xmpp.OnIqPacketReceived;
+import eu.siacs.conversations.xmpp.OnMessageAcknowledged;
 import eu.siacs.conversations.xmpp.OnStatusChanged;
 import eu.siacs.conversations.xmpp.XmppConnection;
 import eu.siacs.conversations.xmpp.jingle.JingleConnectionManager;
@@ -146,8 +147,10 @@ public class XmppConnectionService extends Service {
 
 		@Override
 		public void onStatusChanged(Account account) {
+			XmppConnection connection = account.getXmppConnection();
 			if (mOnAccountUpdate != null) {
-				mOnAccountUpdate.onAccountUpdate();;
+				mOnAccountUpdate.onAccountUpdate();
+				;
 			}
 			if (account.getStatus() == Account.STATUS_ONLINE) {
 				for (Conversation conversation : account.pendingConferenceLeaves) {
@@ -164,27 +167,35 @@ public class XmppConnectionService extends Service {
 						sendUnsendMessages(conversations.get(i));
 					}
 				}
+				if (connection != null && connection.getFeatures().csi()) {
+					if (checkListeners()) {
+						Log.d(LOGTAG, account.getJid()
+								+ " sending csi//inactive");
+						connection.sendInactive();
+					} else {
+						Log.d(LOGTAG, account.getJid() + " sending csi//active");
+						connection.sendActive();
+					}
+				}
 				syncDirtyContacts(account);
 				scheduleWakeupCall(PING_MAX_INTERVAL, true);
 			} else if (account.getStatus() == Account.STATUS_OFFLINE) {
+				resetSendingToWaiting(account);
 				if (!account.isOptionSet(Account.OPTION_DISABLED)) {
 					int timeToReconnect = mRandom.nextInt(50) + 10;
 					scheduleWakeupCall(timeToReconnect, false);
 				}
-
 			} else if (account.getStatus() == Account.STATUS_REGISTRATION_SUCCESSFULL) {
 				databaseBackend.updateAccount(account);
 				reconnectAccount(account, true);
 			} else if ((account.getStatus() != Account.STATUS_CONNECTING)
 					&& (account.getStatus() != Account.STATUS_NO_INTERNET)) {
-				XmppConnection connection = account.getXmppConnection();
 				if (connection != null) {
 					int next = connection.getTimeToNextAttempt();
 					Log.d(LOGTAG, account.getJid()
-							+ ": error connecting account. try again in " + next
+							+ ": error connecting account. try again in "
-							+ "s for the "
+							+ next + "s for the "
-							+ (connection.getAttempt() + 1)
+							+ (connection.getAttempt() + 1) + " time");
-							+ " time");
 					scheduleWakeupCall((int) (next * 1.2), false);
 				}
 			}
@@ -217,12 +228,32 @@ public class XmppConnectionService extends Service {
 			account.pendingConferenceLeaves.clear();
 			fetchRosterFromServer(account);
 			fetchBookmarks(account);
-				sendPresencePacket(account, mPresenceGenerator.sendPresence(account));
+			sendPresencePacket(account,
+					mPresenceGenerator.sendPresence(account));
 			connectMultiModeConversations(account);
 			updateConversationUi();
 		}
 	};
 
+	private OnMessageAcknowledged mOnMessageAcknowledgedListener = new OnMessageAcknowledged() {
+
+		@Override
+		public void onMessageAcknowledged(Account account, String uuid) {
+			for (Conversation conversation : getConversations()) {
+				if (conversation.getAccount() == account) {
+					for (Message message : conversation.getMessages()) {
+						if ((message.getStatus() == Message.STATUS_UNSEND || message
+								.getStatus() == Message.STATUS_WAITING)
+								&& message.getUuid().equals(uuid)) {
+							markMessage(message, Message.STATUS_SEND);
+							return;
+						}
+					}
+				}
+			}
+		}
+	};
+
 	public PgpEngine getPgpEngine() {
 		if (pgpServiceConnection.isBound()) {
 			if (this.mPgpEngine == null) {
@@ -320,8 +351,10 @@ public class XmppConnectionService extends Service {
 						}
 					}
 					if (account.getStatus() == Account.STATUS_ONLINE) {
-						long lastReceived = account.getXmppConnection().getLastPacketReceived();
+						long lastReceived = account.getXmppConnection()
-						long lastSent = account.getXmppConnection().getLastPingSent();
+								.getLastPacketReceived();
+						long lastSent = account.getXmppConnection()
+								.getLastPingSent();
 						if (lastSent - lastReceived >= PING_TIMEOUT * 1000) {
 							Log.d(LOGTAG, account.getJid() + ": ping timeout");
 							this.reconnectAccount(account, true);
@@ -369,7 +402,8 @@ public class XmppConnectionService extends Service {
 		ExceptionHelper.init(getApplicationContext());
 		PRNGFixes.apply();
 		this.mRandom = new SecureRandom();
-		this.mMemorizingTrustManager = new MemorizingTrustManager(getApplicationContext());
+		this.mMemorizingTrustManager = new MemorizingTrustManager(
+				getApplicationContext());
 		this.databaseBackend = DatabaseBackend
 				.getInstance(getApplicationContext());
 		this.fileBackend = new FileBackend(getApplicationContext());
@@ -466,10 +500,11 @@ public class XmppConnectionService extends Service {
 		connection.setOnMessagePacketReceivedListener(this.mMessageParser);
 		connection.setOnStatusChangedListener(this.statusListener);
 		connection.setOnPresencePacketReceivedListener(this.mPresenceParser);
-		connection
+		connection.setOnUnregisteredIqPacketReceivedListener(this.mIqParser);
-				.setOnUnregisteredIqPacketReceivedListener(this.mIqParser);
 		connection.setOnJinglePacketReceivedListener(this.jingleListener);
 		connection.setOnBindListener(this.mOnBindListener);
+		connection
+				.setOnMessageAcknowledgeListener(this.mOnMessageAcknowledgedListener);
 		return connection;
 	}
 
@@ -514,7 +549,6 @@ public class XmppConnectionService extends Service {
 								.getUserID());
 						packet = mMessageGenerator.generateOtrChat(message);
 						send = true;
-						message.setStatus(Message.STATUS_SEND);
 
 					} else if (message.getPresence() == null) {
 						message.setStatus(Message.STATUS_WAITING);
@@ -523,14 +557,10 @@ public class XmppConnectionService extends Service {
 					message.getConversation().endOtrIfNeeded();
 					failWaitingOtrMessages(message.getConversation());
 					packet = mMessageGenerator.generatePgpChat(message);
-					message.setStatus(Message.STATUS_SEND);
 					send = true;
 				} else {
 					message.getConversation().endOtrIfNeeded();
 					failWaitingOtrMessages(message.getConversation());
-					if (message.getConversation().getMode() == Conversation.MODE_SINGLE || message.getType() == Message.TYPE_PRIVATE) {
-						message.setStatus(Message.STATUS_SEND);
-					}
 					packet = mMessageGenerator.generateChat(message);
 					send = true;
 				}
@@ -562,11 +592,14 @@ public class XmppConnectionService extends Service {
 			databaseBackend.createMessage(message);
 		}
 		conv.getMessages().add(message);
-		updateConversationUi();
 		if ((send) && (packet != null)) {
+			if (!account.getXmppConnection().getFeatures().sm()
+					&& conv.getMode() != Conversation.MODE_MULTI) {
+				message.setStatus(Message.STATUS_SEND);
+			}
 			sendMessagePacket(account, packet);
 		}
-
+		updateConversationUi();
 	}
 
 	private void sendUnsendMessages(Conversation conversation) {
@@ -672,7 +705,8 @@ public class XmppConnectionService extends Service {
 			public void onIqPacketReceived(Account account, IqPacket packet) {
 				Element query = packet.query();
 				List<Bookmark> bookmarks = new CopyOnWriteArrayList<Bookmark>();
-				Element storage = query.findChild("storage", "storage:bookmarks");
+				Element storage = query.findChild("storage",
+						"storage:bookmarks");
 				if (storage != null) {
 					for (Element item : storage.getChildren()) {
 						if (item.getName().equals("conference")) {
@@ -683,7 +717,8 @@ public class XmppConnectionService extends Service {
 								conversation.setBookmark(bookmark);
 							} else {
 								if (bookmark.autojoin()) {
-									conversation = findOrCreateConversation(account, bookmark.getJid(), true);
+									conversation = findOrCreateConversation(
+											account, bookmark.getJid(), true);
 									conversation.setBookmark(bookmark);
 									joinMuc(conversation);
 								}
@@ -796,7 +831,8 @@ public class XmppConnectionService extends Service {
 		return null;
 	}
 
-	public Conversation find(List<Conversation> haystack, Account account, String jid) {
+	public Conversation find(List<Conversation> haystack, Account account,
+			String jid) {
 		for (Conversation conversation : haystack) {
 			if ((conversation.getAccount().equals(account))
 					&& (conversation.getContactJid().split("/")[0].equals(jid))) {
@@ -806,7 +842,6 @@ public class XmppConnectionService extends Service {
 		return null;
 	}
 
-	
 	public Conversation findOrCreateConversation(Account account, String jid,
 			boolean muc) {
 		Conversation conversation = find(account, jid);
@@ -911,6 +946,9 @@ public class XmppConnectionService extends Service {
 
 	public void setOnConversationListChangedListener(
 			OnConversationUpdate listener) {
+		if (checkListeners()) {
+			switchToForeground();
+		}
 		this.mOnConversationUpdate = listener;
 		this.convChangedListenerCount++;
 	}
@@ -919,10 +957,16 @@ public class XmppConnectionService extends Service {
 		this.convChangedListenerCount--;
 		if (this.convChangedListenerCount == 0) {
 			this.mOnConversationUpdate = null;
+			if (checkListeners()) {
+				switchToBackground();
+			}
 		}
 	}
 
 	public void setOnAccountListChangedListener(OnAccountUpdate listener) {
+		if (checkListeners()) {
+			switchToForeground();
+		}
 		this.mOnAccountUpdate = listener;
 		this.accountChangedListenerCount++;
 	}
@@ -931,15 +975,53 @@ public class XmppConnectionService extends Service {
 		this.accountChangedListenerCount--;
 		if (this.accountChangedListenerCount == 0) {
 			this.mOnAccountUpdate = null;
+			if (checkListeners()) {
+				switchToBackground();
+			}
 		}
 	}
 
 	public void setOnRosterUpdateListener(OnRosterUpdate listener) {
+		if (checkListeners()) {
+			switchToForeground();
+		}
 		this.mOnRosterUpdate = listener;
 	}
 
 	public void removeOnRosterUpdateListener() {
 		this.mOnRosterUpdate = null;
+		if (checkListeners()) {
+			switchToBackground();
+		}
+	}
+
+	private boolean checkListeners() {
+		return (this.mOnAccountUpdate == null
+				&& this.mOnConversationUpdate == null && this.mOnRosterUpdate == null);
+	}
+
+	private void switchToForeground() {
+		for (Account account : getAccounts()) {
+			if (account.getStatus() == Account.STATUS_ONLINE) {
+				XmppConnection connection = account.getXmppConnection();
+				if (connection != null && connection.getFeatures().csi()) {
+					connection.sendActive();
+					Log.d(LOGTAG, account.getJid() + " sending csi//active");
+				}
+			}
+		}
+	}
+
+	private void switchToBackground() {
+		for (Account account : getAccounts()) {
+			if (account.getStatus() == Account.STATUS_ONLINE) {
+				XmppConnection connection = account.getXmppConnection();
+				if (connection != null && connection.getFeatures().csi()) {
+					connection.sendInactive();
+					Log.d(LOGTAG, account.getJid() + " sending csi//inactive");
+				}
+			}
+		}
 	}
 
 	public void connectMultiModeConversations(Account account) {
@@ -958,7 +1040,8 @@ public class XmppConnectionService extends Service {
 		account.pendingConferenceJoins.remove(conversation);
 		account.pendingConferenceLeaves.remove(conversation);
 		if (account.getStatus() == Account.STATUS_ONLINE) {
-			Log.d(LOGTAG,"joining conversation "+conversation.getContactJid());
+			Log.d(LOGTAG,
+					"joining conversation " + conversation.getContactJid());
 			String nick = conversation.getMucOptions().getProposedNick();
 			conversation.getMucOptions().setJoinNick(nick);
 			PresencePacket packet = new PresencePacket();
@@ -975,8 +1058,8 @@ public class XmppConnectionService extends Service {
 				final SimpleDateFormat mDateFormat = new SimpleDateFormat(
 						"yyyy-MM-dd'T'HH:mm:ss.SSS'Z'", Locale.US);
 				mDateFormat.setTimeZone(TimeZone.getTimeZone("UTC"));
-				Date date = new Date(
+				Date date = new Date(conversation.getLatestMessage()
-						conversation.getLatestMessage().getTimeSent() + 1000);
+						.getTimeSent() + 1000);
 				x.addChild("history").setAttribute("since",
 						mDateFormat.format(date));
 			}
@@ -1011,7 +1094,8 @@ public class XmppConnectionService extends Service {
 						renameListener.onRename(success);
 					}
 					if (success) {
-						conversation.setContactJid(conversation.getMucOptions().getJoinJid());
+						conversation.setContactJid(conversation.getMucOptions()
+								.getJoinJid());
 						databaseBackend.updateConversation(conversation);
 						Bookmark bookmark = conversation.getBookmark();
 						if (bookmark != null) {
@@ -1058,7 +1142,8 @@ public class XmppConnectionService extends Service {
 			sendPresencePacket(conversation.getAccount(), packet);
 			conversation.getMucOptions().setOffline();
 			conversation.deregisterWithBookmark();
-			Log.d(LOGTAG,conversation.getAccount().getJid()+" leaving muc "+conversation.getContactJid());
+			Log.d(LOGTAG, conversation.getAccount().getJid() + " leaving muc "
+					+ conversation.getContactJid());
 		} else {
 			account.pendingConferenceLeaves.add(conversation);
 		}
@@ -1176,25 +1261,29 @@ public class XmppConnectionService extends Service {
 		Account account = contact.getAccount();
 		if (account.getStatus() == Account.STATUS_ONLINE) {
 			boolean ask = contact.getOption(Contact.Options.ASKING);
-			boolean sendUpdates = contact.getOption(Contact.Options.PENDING_SUBSCRIPTION_REQUEST)
+			boolean sendUpdates = contact
+					.getOption(Contact.Options.PENDING_SUBSCRIPTION_REQUEST)
 					&& contact.getOption(Contact.Options.PREEMPTIVE_GRANT);
 			IqPacket iq = new IqPacket(IqPacket.TYPE_SET);
 			iq.query("jabber:iq:roster").addChild(contact.asElement());
 			account.getXmppConnection().sendIqPacket(iq, null);
 			if (sendUpdates) {
-				sendPresencePacket(account, mPresenceGenerator.sendPresenceUpdatesTo(contact));
+				sendPresencePacket(account,
+						mPresenceGenerator.sendPresenceUpdatesTo(contact));
 			}
 			if (ask) {
-				sendPresencePacket(account, mPresenceGenerator.requestPresenceUpdatesFrom(contact));
+				sendPresencePacket(account,
+						mPresenceGenerator.requestPresenceUpdatesFrom(contact));
 			}
 		}
 	}
 
-	
+	public void publishAvatar(Account account, Uri image,
-	public void publishAvatar(Account account, Uri image, final UiCallback<Avatar> callback) {
+			final UiCallback<Avatar> callback) {
 		final Bitmap.CompressFormat format = Defaults.AVATAR_FORMAT;
 		final int size = Defaults.AVATAR_SIZE;
-		final Avatar avatar = getFileBackend().getPepAvatar(image, size, format);
+		final Avatar avatar = getFileBackend()
+				.getPepAvatar(image, size, format);
 		if (avatar != null) {
 			avatar.height = size;
 			avatar.width = size;
@@ -1215,23 +1304,29 @@ public class XmppConnectionService extends Service {
 				@Override
 				public void onIqPacketReceived(Account account, IqPacket result) {
 					if (result.getType() == IqPacket.TYPE_RESULT) {
-						IqPacket packet = XmppConnectionService.this.mIqGenerator.publishAvatarMetadata(avatar);
+						IqPacket packet = XmppConnectionService.this.mIqGenerator
+								.publishAvatarMetadata(avatar);
 						sendIqPacket(account, packet, new OnIqPacketReceived() {
 
 							@Override
-							public void onIqPacketReceived(Account account, IqPacket result) {
+							public void onIqPacketReceived(Account account,
+									IqPacket result) {
 								if (result.getType() == IqPacket.TYPE_RESULT) {
 									if (account.setAvatar(avatar.getFilename())) {
 										databaseBackend.updateAccount(account);
 									}
 									callback.success(avatar);
 								} else {
-									callback.error(R.string.error_publish_avatar_server_reject, avatar);
+									callback.error(
+											R.string.error_publish_avatar_server_reject,
+											avatar);
 								}
 							}
 						});
 					} else {
-						callback.error(R.string.error_publish_avatar_server_reject, avatar);
+						callback.error(
+								R.string.error_publish_avatar_server_reject,
+								avatar);
 					}
 				}
 			});
@@ -1244,8 +1339,10 @@ public class XmppConnectionService extends Service {
 		fetchAvatar(account, avatar, null);
 	}
 
-	public void fetchAvatar(Account account, final Avatar avatar, final UiCallback<Avatar> callback) {
+	public void fetchAvatar(Account account, final Avatar avatar,
-		Log.d(LOGTAG,account.getJid()+": retrieving avatar for "+avatar.owner);
+			final UiCallback<Avatar> callback) {
+		Log.d(LOGTAG, account.getJid() + ": retrieving avatar for "
+				+ avatar.owner);
 		IqPacket packet = this.mIqGenerator.retrieveAvatar(avatar);
 		sendIqPacket(account, packet, new OnIqPacketReceived() {
 
@@ -1259,7 +1356,8 @@ public class XmppConnectionService extends Service {
 								databaseBackend.updateAccount(account);
 							}
 						} else {
-							Contact contact = account.getRoster().getContact(avatar.owner);
+							Contact contact = account.getRoster().getContact(
+									avatar.owner);
 							contact.setAvatar(avatar.getFilename());
 						}
 						if (callback != null) {
@@ -1275,14 +1373,16 @@ public class XmppConnectionService extends Service {
 		});
 	}
 
-	public void checkForAvatar(Account account, final UiCallback<Avatar> callback) {
+	public void checkForAvatar(Account account,
+			final UiCallback<Avatar> callback) {
 		IqPacket packet = this.mIqGenerator.retrieveAvatarMetaData(null);
 		this.sendIqPacket(account, packet, new OnIqPacketReceived() {
 
 			@Override
 			public void onIqPacketReceived(Account account, IqPacket packet) {
 				if (packet.getType() == IqPacket.TYPE_RESULT) {
-					Element pubsub = packet.findChild("pubsub", "http://jabber.org/protocol/pubsub");
+					Element pubsub = packet.findChild("pubsub",
+							"http://jabber.org/protocol/pubsub");
 					if (pubsub != null) {
 						Element items = pubsub.findChild("items");
 						if (items != null) {
@@ -1350,6 +1450,18 @@ public class XmppConnectionService extends Service {
 		sendMessagePacket(conversation.getAccount(), packet);
 	}
 
+	public void resetSendingToWaiting(Account account) {
+		for (Conversation conversation : getConversations()) {
+			if (conversation.getAccount() == account) {
+				for (Message message : conversation.getMessages()) {
+					if (message.getStatus() == Message.STATUS_UNSEND) {
+						markMessage(message, Message.STATUS_WAITING);
+					}
+				}
+			}
+		}
+	}
+
 	public boolean markMessage(Account account, String recipient, String uuid,
 			int status) {
 		for (Conversation conversation : getConversations()) {
@@ -1438,7 +1550,8 @@ public class XmppConnectionService extends Service {
 		if (confirmMessages() && id != null) {
 			Account account = conversation.getAccount();
 			String to = conversation.getContactJid();
-			this.sendMessagePacket(conversation.getAccount(), mMessageGenerator.confirm(account, to, id));
+			this.sendMessagePacket(conversation.getAccount(),
+					mMessageGenerator.confirm(account, to, id));
 		}
 	}
 
@@ -1521,7 +1634,8 @@ public class XmppConnectionService extends Service {
 		account.getXmppConnection().sendPresencePacket(packet);
 	}
 
-	public void sendIqPacket(Account account, IqPacket packet, OnIqPacketReceived callback) {
+	public void sendIqPacket(Account account, IqPacket packet,
+			OnIqPacketReceived callback) {
 		account.getXmppConnection().sendIqPacket(packet, callback);
 	}
 

src/eu/siacs/conversations/xml/XmlReader.java

@@ -90,6 +90,10 @@ public class XmlReader {
 			throw new IOException("xml parser mishandled ArrayIndexOufOfBounds", e);
 		} catch (StringIndexOutOfBoundsException e) {
 			throw new IOException("xml parser mishandled StringIndexOufOfBounds", e);
+		} catch (NullPointerException e) {
+			throw new IOException("xml parser mishandled NullPointerException", e);
+		} catch (IndexOutOfBoundsException e) {
+			throw new IOException("xml parser mishandled IndexOutOfBound", e);
 		}
 		return null;
 	}

src/eu/siacs/conversations/xmpp/OnMessageAcknowledged.java

@@ -0,0 +1,7 @@
+package eu.siacs.conversations.xmpp;
+
+import eu.siacs.conversations.entities.Account;
+
+public interface OnMessageAcknowledged {
+	public void onMessageAcknowledged(Account account, String id);
+}

src/eu/siacs/conversations/xmpp/XmppConnection.java

@@ -31,6 +31,7 @@ import android.os.PowerManager;
 import android.os.PowerManager.WakeLock;
 import android.os.SystemClock;
 import android.util.Log;
+import android.util.SparseArray;
 import eu.siacs.conversations.entities.Account;
 import eu.siacs.conversations.services.XmppConnectionService;
 import eu.siacs.conversations.utils.CryptoHelper;
@@ -47,6 +48,8 @@ import eu.siacs.conversations.xmpp.stanzas.AbstractStanza;
 import eu.siacs.conversations.xmpp.stanzas.IqPacket;
 import eu.siacs.conversations.xmpp.stanzas.MessagePacket;
 import eu.siacs.conversations.xmpp.stanzas.PresencePacket;
+import eu.siacs.conversations.xmpp.stanzas.csi.ActivePacket;
+import eu.siacs.conversations.xmpp.stanzas.csi.InactivePacket;
 import eu.siacs.conversations.xmpp.stanzas.streammgmt.AckPacket;
 import eu.siacs.conversations.xmpp.stanzas.streammgmt.EnablePacket;
 import eu.siacs.conversations.xmpp.stanzas.streammgmt.RequestPacket;
@@ -74,6 +77,7 @@ public class XmppConnection implements Runnable {
 
 	private String streamId = null;
 	private int smVersion = 3;
+	private SparseArray<String> messageReceipts = new SparseArray<String>();
 	
 	private boolean usingCompression = false;
 
@@ -98,6 +102,7 @@ public class XmppConnection implements Runnable {
 	private OnMessagePacketReceived messageListener = null;
 	private OnStatusChanged statusListener = null;
 	private OnBindListener bindListener = null;
+	private OnMessageAcknowledged acknowledgedListener = null;
 	private MemorizingTrustManager mMemorizingTrustManager;
 
 	public XmppConnection(Account account, XmppConnectionService service) {
@@ -248,7 +253,6 @@ public class XmppConnection implements Runnable {
 						challange,mRandom));
 				tagWriter.writeElement(response);
 			} else if (nextTag.isStart("enabled")) {
-				this.stanzasSent = 0;
 				Element enabled = tagReader.readElement(nextTag);
 				if ("true".equals(enabled.getAttribute("resume"))) {
 					this.streamId = enabled.getAttribute("id");
@@ -264,9 +268,27 @@ public class XmppConnection implements Runnable {
 				tagWriter.writeStanzaAsync(r);
 			} else if (nextTag.isStart("resumed")) {
 				lastPaketReceived = SystemClock.elapsedRealtime();
+				Element resumed = tagReader.readElement(nextTag);
+				String h = resumed.getAttribute("h");
+				try {
+					int serverCount = Integer.parseInt(h);
+					if (serverCount!=stanzasSent) {
+						Log.d(LOGTAG,account.getJid() + ": session resumed with lost packages");
+						stanzasSent = serverCount;
+					} else {
 						Log.d(LOGTAG, account.getJid() + ": session resumed");
-				tagReader.readElement(nextTag);
+					}
-				sendPing();
+					if (acknowledgedListener!=null) {
+						for(int i = 0; i < messageReceipts.size(); ++i) {
+							if (serverCount>=messageReceipts.keyAt(i)) {
+								acknowledgedListener.onMessageAcknowledged(account, messageReceipts.valueAt(i));
+							}
+						}
+					}
+					messageReceipts.clear();
+				} catch (NumberFormatException e) {
+					
+				}
 				changeStatus(Account.STATUS_ONLINE);
 			} else if (nextTag.isStart("r")) {
 				tagReader.readElement(nextTag);
@@ -276,8 +298,12 @@ public class XmppConnection implements Runnable {
 				Element ack = tagReader.readElement(nextTag);
 				lastPaketReceived = SystemClock.elapsedRealtime();
 				int serverSequence = Integer.parseInt(ack.getAttribute("h"));
-				if (serverSequence > this.stanzasSent) {
+				String msgId = this.messageReceipts.get(serverSequence);
-					this.stanzasSent = serverSequence;
+				if (msgId != null) {
+					if (this.acknowledgedListener != null) {
+						this.acknowledgedListener.onMessageAcknowledged(account, msgId);
+					}
+					this.messageReceipts.remove(serverSequence);
 				}
 			} else if (nextTag.isStart("failed")) {
 				tagReader.readElement(nextTag);
@@ -610,10 +636,14 @@ public class XmppConnection implements Runnable {
 							smVersion = 3;
 							EnablePacket enable = new EnablePacket(smVersion);
 							tagWriter.writeStanzaAsync(enable);
+							stanzasSent = 0;
+							messageReceipts.clear();
 						} else if (streamFeatures.hasChild("sm", "urn:xmpp:sm:2")) {
 							smVersion = 2;
 							EnablePacket enable = new EnablePacket(smVersion);
 							tagWriter.writeStanzaAsync(enable);
+							stanzasSent = 0;
+							messageReceipts.clear();
 						}
 						sendServiceDiscoveryInfo(account.getServer());
 						sendServiceDiscoveryItems(account.getServer());
@@ -751,9 +781,15 @@ public class XmppConnection implements Runnable {
 	
 	private synchronized void sendPacket(final AbstractStanza packet,
 			PacketReceived callback) {
-		// TODO dont increment stanza count if packet = request packet or ack;
+		if (packet.getName().equals("iq") || packet.getName().equals("message") || packet.getName().equals("presence")) {
 			++stanzasSent;
+		}
 		tagWriter.writeStanzaAsync(packet);
+		if (packet instanceof MessagePacket && packet.getId() != null && this.streamId != null) {
+			Log.d(LOGTAG,"request delivery report for stanza "+stanzasSent);
+			this.messageReceipts.put(stanzasSent, packet.getId());
+			tagWriter.writeStanzaAsync(new RequestPacket(this.smVersion));
+		}
 		if (callback != null) {
 			if (packet.getId() == null) {
 				packet.setId(nextRandomId());
@@ -802,6 +838,10 @@ public class XmppConnection implements Runnable {
 		this.bindListener = listener;
 	}
 	
+	public void setOnMessageAcknowledgeListener(OnMessageAcknowledged listener) {
+		this.acknowledgedListener = listener;
+	}
+
 	public void disconnect(boolean force) {
 		changeStatus(Account.STATUS_OFFLINE);
 		Log.d(LOGTAG, "disconnecting");
@@ -900,6 +940,14 @@ public class XmppConnection implements Runnable {
 			}
 		}
 		
+		public boolean csi() {
+			if (connection.streamFeatures == null) {
+				return false;
+			} else {
+				return connection.streamFeatures.hasChild("csi","urn:xmpp:csi:0");
+			}
+		}
+		
 		public boolean pubsub() {
 			return hasDiscoFeature(account.getServer(), "http://jabber.org/protocol/pubsub#publish");
 		}
@@ -942,4 +990,12 @@ public class XmppConnection implements Runnable {
 	public long getLastPacketReceived() {
 		return this.lastPaketReceived;
 	}
+
+	public void sendActive() {
+		this.sendPacket(new ActivePacket(), null);
+	}
+	
+	public void sendInactive() {
+		this.sendPacket(new InactivePacket(), null);
+	}
 }

src/eu/siacs/conversations/xmpp/stanzas/csi/ActivePacket.java

@@ -0,0 +1,10 @@
+package eu.siacs.conversations.xmpp.stanzas.csi;
+
+import eu.siacs.conversations.xmpp.stanzas.AbstractStanza;
+
+public class ActivePacket extends AbstractStanza {
+	public ActivePacket() {
+		super("active");
+		setAttribute("xmlns", "urn:xmpp:csi:0");
+	}
+}

src/eu/siacs/conversations/xmpp/stanzas/csi/InactivePacket.java

@@ -0,0 +1,10 @@
+package eu.siacs.conversations.xmpp.stanzas.csi;
+
+import eu.siacs.conversations.xmpp.stanzas.AbstractStanza;
+
+public class InactivePacket extends AbstractStanza {
+	public InactivePacket() {
+		super("inactive");
+		setAttribute("xmlns", "urn:xmpp:csi:0");
+	}
+}