package eu.siacs.conversations.parser; import android.os.SystemClock; import net.java.otr4j.session.Session; import net.java.otr4j.session.SessionStatus; import eu.siacs.conversations.Config; import eu.siacs.conversations.entities.Account; import eu.siacs.conversations.entities.Contact; import eu.siacs.conversations.entities.Conversation; import eu.siacs.conversations.entities.Message; import eu.siacs.conversations.services.XmppConnectionService; import eu.siacs.conversations.utils.CryptoHelper; import eu.siacs.conversations.xml.Element; import eu.siacs.conversations.xmpp.OnMessagePacketReceived; import eu.siacs.conversations.xmpp.pep.Avatar; import eu.siacs.conversations.xmpp.stanzas.MessagePacket; public class MessageParser extends AbstractParser implements OnMessagePacketReceived { private long lastCarbonMessageReceived = -(Config.CARBON_GRACE_PERIOD * 1000); public MessageParser(XmppConnectionService service) { super(service); } private Message parseChat(MessagePacket packet, Account account) { String[] fromParts = packet.getFrom().split("/", 2); Conversation conversation = mXmppConnectionService .findOrCreateConversation(account, fromParts[0], false); conversation.setLatestMarkableMessageId(getMarkableMessageId(packet)); updateLastseen(packet, account, true); String pgpBody = getPgpBody(packet); Message finishedMessage; if (pgpBody != null) { finishedMessage = new Message(conversation, packet.getFrom(), pgpBody, Message.ENCRYPTION_PGP, Message.STATUS_RECEIVED); } else { finishedMessage = new Message(conversation, packet.getFrom(), packet.getBody(), Message.ENCRYPTION_NONE, Message.STATUS_RECEIVED); } finishedMessage.setRemoteMsgId(packet.getId()); if (conversation.getMode() == Conversation.MODE_MULTI && fromParts.length >= 2) { finishedMessage.setType(Message.TYPE_PRIVATE); finishedMessage.setPresence(fromParts[1]); finishedMessage.setTrueCounterpart(conversation.getMucOptions() .getTrueCounterpart(fromParts[1])); if (conversation.hasDuplicateMessage(finishedMessage)) { return null; } } finishedMessage.setTime(getTimestamp(packet)); return finishedMessage; } private Message parseOtrChat(MessagePacket packet, Account account) { boolean properlyAddressed = (packet.getTo().split("/", 2).length == 2) || (account.countPresences() == 1); String[] fromParts = packet.getFrom().split("/", 2); Conversation conversation = mXmppConnectionService .findOrCreateConversation(account, fromParts[0], false); String presence; if (fromParts.length >= 2) { presence = fromParts[1]; } else { presence = ""; } updateLastseen(packet, account, true); String body = packet.getBody(); if (body.matches("^\\?OTRv\\d*\\?")) { conversation.resetOtrSession(); } if (!conversation.hasValidOtrSession()) { if (properlyAddressed) { conversation.startOtrSession(mXmppConnectionService, presence, false); } else { return null; } } else { String foreignPresence = conversation.getOtrSession() .getSessionID().getUserID(); if (!foreignPresence.equals(presence)) { conversation.endOtrIfNeeded(); if (properlyAddressed) { conversation.startOtrSession(mXmppConnectionService, presence, false); } else { return null; } } } try { Session otrSession = conversation.getOtrSession(); SessionStatus before = otrSession.getSessionStatus(); body = otrSession.transformReceiving(body); SessionStatus after = otrSession.getSessionStatus(); if ((before != after) && (after == SessionStatus.ENCRYPTED)) { mXmppConnectionService.onOtrSessionEstablished(conversation); } else if ((before != after) && (after == SessionStatus.FINISHED)) { conversation.resetOtrSession(); mXmppConnectionService.updateConversationUi(); } if ((body == null) || (body.isEmpty())) { return null; } if (body.startsWith(CryptoHelper.FILETRANSFER)) { String key = body.substring(CryptoHelper.FILETRANSFER.length()); conversation.setSymmetricKey(CryptoHelper.hexToBytes(key)); return null; } conversation .setLatestMarkableMessageId(getMarkableMessageId(packet)); Message finishedMessage = new Message(conversation, packet.getFrom(), body, Message.ENCRYPTION_OTR, Message.STATUS_RECEIVED); finishedMessage.setTime(getTimestamp(packet)); finishedMessage.setRemoteMsgId(packet.getId()); return finishedMessage; } catch (Exception e) { String receivedId = packet.getId(); if (receivedId != null) { mXmppConnectionService.replyWithNotAcceptable(account, packet); } conversation.resetOtrSession(); return null; } } private Message parseGroupchat(MessagePacket packet, Account account) { int status; String[] fromParts = packet.getFrom().split("/", 2); if (mXmppConnectionService.find(account.pendingConferenceLeaves, account, fromParts[0]) != null) { return null; } Conversation conversation = mXmppConnectionService .findOrCreateConversation(account, fromParts[0], true); if (packet.hasChild("subject")) { conversation.getMucOptions().setSubject( packet.findChild("subject").getContent()); mXmppConnectionService.updateConversationUi(); return null; } if ((fromParts.length == 1)) { return null; } String counterPart = fromParts[1]; if (counterPart.equals(conversation.getMucOptions().getActualNick())) { if (mXmppConnectionService.markMessage(conversation, packet.getId(), Message.STATUS_SEND)) { return null; } else { status = Message.STATUS_SEND; } } else { status = Message.STATUS_RECEIVED; } String pgpBody = getPgpBody(packet); conversation.setLatestMarkableMessageId(getMarkableMessageId(packet)); Message finishedMessage; if (pgpBody == null) { finishedMessage = new Message(conversation, counterPart, packet.getBody(), Message.ENCRYPTION_NONE, status); } else { finishedMessage = new Message(conversation, counterPart, pgpBody, Message.ENCRYPTION_PGP, status); } finishedMessage.setRemoteMsgId(packet.getId()); if (status == Message.STATUS_RECEIVED) { finishedMessage.setTrueCounterpart(conversation.getMucOptions() .getTrueCounterpart(counterPart)); } if (packet.hasChild("delay") && conversation.hasDuplicateMessage(finishedMessage)) { return null; } finishedMessage.setTime(getTimestamp(packet)); return finishedMessage; } private Message parseCarbonMessage(MessagePacket packet, Account account) { int status; String fullJid; Element forwarded; if (packet.hasChild("received", "urn:xmpp:carbons:2")) { forwarded = packet.findChild("received", "urn:xmpp:carbons:2") .findChild("forwarded", "urn:xmpp:forward:0"); status = Message.STATUS_RECEIVED; } else if (packet.hasChild("sent", "urn:xmpp:carbons:2")) { forwarded = packet.findChild("sent", "urn:xmpp:carbons:2") .findChild("forwarded", "urn:xmpp:forward:0"); status = Message.STATUS_SEND; } else { return null; } if (forwarded == null) { return null; } Element message = forwarded.findChild("message"); if ((message == null) || (!message.hasChild("body"))) { if (status == Message.STATUS_RECEIVED && message.getAttribute("from") != null) { parseNonMessage(message, account); } return null; } if (status == Message.STATUS_RECEIVED) { fullJid = message.getAttribute("from"); if (fullJid == null) { return null; } else { updateLastseen(message, account, true); } } else { fullJid = message.getAttribute("to"); if (fullJid == null) { return null; } } String[] parts = fullJid.split("/", 2); Conversation conversation = mXmppConnectionService .findOrCreateConversation(account, parts[0], false); conversation.setLatestMarkableMessageId(getMarkableMessageId(packet)); String pgpBody = getPgpBody(message); Message finishedMessage; if (pgpBody != null) { finishedMessage = new Message(conversation, fullJid, pgpBody, Message.ENCRYPTION_PGP, status); } else { String body = message.findChild("body").getContent(); finishedMessage = new Message(conversation, fullJid, body, Message.ENCRYPTION_NONE, status); } finishedMessage.setTime(getTimestamp(message)); finishedMessage.setRemoteMsgId(message.getAttribute("id")); if (conversation.getMode() == Conversation.MODE_MULTI && parts.length >= 2) { finishedMessage.setType(Message.TYPE_PRIVATE); finishedMessage.setPresence(parts[1]); finishedMessage.setTrueCounterpart(conversation.getMucOptions() .getTrueCounterpart(parts[1])); if (conversation.hasDuplicateMessage(finishedMessage)) { return null; } } return finishedMessage; } private void parseError(MessagePacket packet, Account account) { String[] fromParts = packet.getFrom().split("/", 2); mXmppConnectionService.markMessage(account, fromParts[0], packet.getId(), Message.STATUS_SEND_FAILED); } private void parseNonMessage(Element packet, Account account) { String from = packet.getAttribute("from"); if (packet.hasChild("event", "http://jabber.org/protocol/pubsub#event")) { Element event = packet.findChild("event", "http://jabber.org/protocol/pubsub#event"); parseEvent(event, packet.getAttribute("from"), account); } else if (from != null && packet.hasChild("displayed", "urn:xmpp:chat-markers:0")) { String id = packet .findChild("displayed", "urn:xmpp:chat-markers:0") .getAttribute("id"); updateLastseen(packet, account, true); mXmppConnectionService.markMessage(account, from.split("/", 2)[0], id, Message.STATUS_SEND_DISPLAYED); } else if (from != null && packet.hasChild("received", "urn:xmpp:chat-markers:0")) { String id = packet.findChild("received", "urn:xmpp:chat-markers:0") .getAttribute("id"); updateLastseen(packet, account, false); mXmppConnectionService.markMessage(account, from.split("/", 2)[0], id, Message.STATUS_SEND_RECEIVED); } else if (from != null && packet.hasChild("received", "urn:xmpp:receipts")) { String id = packet.findChild("received", "urn:xmpp:receipts") .getAttribute("id"); updateLastseen(packet, account, false); mXmppConnectionService.markMessage(account, from.split("/", 2)[0], id, Message.STATUS_SEND_RECEIVED); } else if (packet.hasChild("x", "http://jabber.org/protocol/muc#user")) { Element x = packet.findChild("x", "http://jabber.org/protocol/muc#user"); if (x.hasChild("invite")) { Conversation conversation = mXmppConnectionService .findOrCreateConversation(account, packet.getAttribute("from"), true); if (!conversation.getMucOptions().online()) { if (x.hasChild("password")) { Element password = x.findChild("password"); conversation.getMucOptions().setPassword( password.getContent()); } mXmppConnectionService.joinMuc(conversation); mXmppConnectionService.updateConversationUi(); } } } else if (packet.hasChild("x", "jabber:x:conference")) { Element x = packet.findChild("x", "jabber:x:conference"); String jid = x.getAttribute("jid"); String password = x.getAttribute("password"); if (jid != null) { Conversation conversation = mXmppConnectionService .findOrCreateConversation(account, jid, true); if (!conversation.getMucOptions().online()) { if (password != null) { conversation.getMucOptions().setPassword(password); } mXmppConnectionService.joinMuc(conversation); mXmppConnectionService.updateConversationUi(); } } } } private void parseEvent(Element event, String from, Account account) { Element items = event.findChild("items"); String node = items.getAttribute("node"); if (node != null) { if (node.equals("urn:xmpp:avatar:metadata")) { Avatar avatar = Avatar.parseMetadata(items); if (avatar != null) { avatar.owner = from; if (mXmppConnectionService.getFileBackend().isAvatarCached( avatar)) { if (account.getJid().equals(from)) { if (account.setAvatar(avatar.getFilename())) { mXmppConnectionService.databaseBackend .updateAccount(account); } } else { Contact contact = account.getRoster().getContact( from); contact.setAvatar(avatar.getFilename()); } } else { mXmppConnectionService.fetchAvatar(account, avatar); } } } else if (node.equals("http://jabber.org/protocol/nick")) { Element item = items.findChild("item"); if (item != null) { Element nick = item.findChild("nick", "http://jabber.org/protocol/nick"); if (nick != null) { if (from != null) { Contact contact = account.getRoster().getContact( from); contact.setPresenceName(nick.getContent()); } } } } } } private String getPgpBody(Element message) { Element child = message.findChild("x", "jabber:x:encrypted"); if (child == null) { return null; } else { return child.getContent(); } } private String getMarkableMessageId(Element message) { if (message.hasChild("markable", "urn:xmpp:chat-markers:0")) { return message.getAttribute("id"); } else { return null; } } @Override public void onMessagePacketReceived(Account account, MessagePacket packet) { Message message = null; boolean notify = true; if (mXmppConnectionService.getPreferences().getBoolean( "notification_grace_period_after_carbon_received", true)) { notify = (SystemClock.elapsedRealtime() - lastCarbonMessageReceived) > (Config.CARBON_GRACE_PERIOD * 1000); } this.parseNick(packet, account); if ((packet.getType() == MessagePacket.TYPE_CHAT || packet.getType() == MessagePacket.TYPE_NORMAL)) { if ((packet.getBody() != null) && (packet.getBody().startsWith("?OTR"))) { message = this.parseOtrChat(packet, account); if (message != null) { message.markUnread(); } } else if (packet.hasChild("body")) { message = this.parseChat(packet, account); if (message != null) { message.markUnread(); } } else if (packet.hasChild("received", "urn:xmpp:carbons:2") || (packet.hasChild("sent", "urn:xmpp:carbons:2"))) { message = this.parseCarbonMessage(packet, account); if (message != null) { if (message.getStatus() == Message.STATUS_SEND) { lastCarbonMessageReceived = SystemClock .elapsedRealtime(); notify = false; message.getConversation().markRead(); } else { message.markUnread(); } } } else { parseNonMessage(packet, account); } } else if (packet.getType() == MessagePacket.TYPE_GROUPCHAT) { message = this.parseGroupchat(packet, account); if (message != null) { if (message.getStatus() == Message.STATUS_RECEIVED) { message.markUnread(); } else { message.getConversation().markRead(); lastCarbonMessageReceived = SystemClock.elapsedRealtime(); notify = false; } } } else if (packet.getType() == MessagePacket.TYPE_ERROR) { this.parseError(packet, account); return; } else if (packet.getType() == MessagePacket.TYPE_HEADLINE) { this.parseHeadline(packet, account); return; } if ((message == null) || (message.getBody() == null)) { return; } if ((mXmppConnectionService.confirmMessages()) && ((packet.getId() != null))) { if (packet.hasChild("markable", "urn:xmpp:chat-markers:0")) { MessagePacket receipt = mXmppConnectionService .getMessageGenerator().received(account, packet, "urn:xmpp:chat-markers:0"); mXmppConnectionService.sendMessagePacket(account, receipt); } if (packet.hasChild("request", "urn:xmpp:receipts")) { MessagePacket receipt = mXmppConnectionService .getMessageGenerator().received(account, packet, "urn:xmpp:receipts"); mXmppConnectionService.sendMessagePacket(account, receipt); } } Conversation conversation = message.getConversation(); conversation.getMessages().add(message); if (packet.getType() != MessagePacket.TYPE_ERROR) { if (message.getEncryption() == Message.ENCRYPTION_NONE || mXmppConnectionService.saveEncryptedMessages()) { mXmppConnectionService.databaseBackend.createMessage(message); } } notify = notify && !conversation.isMuted(); mXmppConnectionService.notifyUi(conversation, notify); } private void parseHeadline(MessagePacket packet, Account account) { if (packet.hasChild("event", "http://jabber.org/protocol/pubsub#event")) { Element event = packet.findChild("event", "http://jabber.org/protocol/pubsub#event"); parseEvent(event, packet.getFrom(), account); } } private void parseNick(MessagePacket packet, Account account) { Element nick = packet.findChild("nick", "http://jabber.org/protocol/nick"); if (nick != null) { if (packet.getFrom() != null) { Contact contact = account.getRoster().getContact( packet.getFrom()); contact.setPresenceName(nick.getContent()); } } } }