package eu.siacs.conversations.parser; import android.util.Log; import android.util.Pair; import net.java.otr4j.session.Session; import net.java.otr4j.session.SessionStatus; import java.util.Set; import eu.siacs.conversations.Config; import eu.siacs.conversations.crypto.axolotl.AxolotlService; import eu.siacs.conversations.crypto.axolotl.XmppAxolotlMessage; 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.entities.MucOptions; import eu.siacs.conversations.http.HttpConnectionManager; import eu.siacs.conversations.services.MessageArchiveService; 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.chatstate.ChatState; import eu.siacs.conversations.xmpp.jid.Jid; import eu.siacs.conversations.xmpp.pep.Avatar; import eu.siacs.conversations.xmpp.stanzas.MessagePacket; public class MessageParser extends AbstractParser implements OnMessagePacketReceived { public MessageParser(XmppConnectionService service) { super(service); } private boolean extractChatState(Conversation conversation, final MessagePacket packet) { ChatState state = ChatState.parse(packet); if (state != null && conversation != null) { final Account account = conversation.getAccount(); Jid from = packet.getFrom(); if (from.toBareJid().equals(account.getJid().toBareJid())) { conversation.setOutgoingChatState(state); if (state == ChatState.ACTIVE || state == ChatState.COMPOSING) { mXmppConnectionService.markRead(conversation); account.activateGracePeriod(); } return false; } else { return conversation.setIncomingChatState(state); } } return false; } private Message parseOtrChat(String body, Jid from, String id, Conversation conversation) { String presence; if (from.isBareJid()) { presence = ""; } else { presence = from.getResourcepart(); } if (body.matches("^\\?OTRv\\d{1,2}\\?.*")) { conversation.endOtrIfNeeded(); } if (!conversation.hasValidOtrSession()) { conversation.startOtrSession(presence,false); } else { String foreignPresence = conversation.getOtrSession().getSessionID().getUserID(); if (!foreignPresence.equals(presence)) { conversation.endOtrIfNeeded(); conversation.startOtrSession(presence, false); } } try { conversation.setLastReceivedOtrMessageId(id); Session otrSession = conversation.getOtrSession(); body = otrSession.transformReceiving(body); SessionStatus status = otrSession.getSessionStatus(); if (body == null && status == SessionStatus.ENCRYPTED) { mXmppConnectionService.onOtrSessionEstablished(conversation); return null; } else if (body == null && status == SessionStatus.FINISHED) { conversation.resetOtrSession(); mXmppConnectionService.updateConversationUi(); return null; } else 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; } Message finishedMessage = new Message(conversation, body, Message.ENCRYPTION_OTR, Message.STATUS_RECEIVED); conversation.setLastReceivedOtrMessageId(null); return finishedMessage; } catch (Exception e) { conversation.resetOtrSession(); return null; } } private Message parseAxolotlChat(Element axolotlMessage, Jid from, String id, Conversation conversation, int status) { Message finishedMessage = null; AxolotlService service = conversation.getAccount().getAxolotlService(); XmppAxolotlMessage xmppAxolotlMessage = XmppAxolotlMessage.fromElement(axolotlMessage, from.toBareJid()); XmppAxolotlMessage.XmppAxolotlPlaintextMessage plaintextMessage = service.processReceivingPayloadMessage(xmppAxolotlMessage); if(plaintextMessage != null) { finishedMessage = new Message(conversation, plaintextMessage.getPlaintext(), Message.ENCRYPTION_AXOLOTL, status); finishedMessage.setAxolotlFingerprint(plaintextMessage.getFingerprint()); Log.d(Config.LOGTAG, AxolotlService.getLogprefix(finishedMessage.getConversation().getAccount())+" Received Message with session fingerprint: "+plaintextMessage.getFingerprint()); } return finishedMessage; } private class Invite { Jid jid; String password; Invite(Jid jid, String password) { this.jid = jid; this.password = password; } public boolean execute(Account account) { if (jid != null) { Conversation conversation = mXmppConnectionService.findOrCreateConversation(account, jid, true); if (!conversation.getMucOptions().online()) { conversation.getMucOptions().setPassword(password); mXmppConnectionService.databaseBackend.updateConversation(conversation); mXmppConnectionService.joinMuc(conversation); mXmppConnectionService.updateConversationUi(); } return true; } return false; } } private Invite extractInvite(Element message) { Element x = message.findChild("x", "http://jabber.org/protocol/muc#user"); if (x != null) { Element invite = x.findChild("invite"); if (invite != null) { Element pw = x.findChild("password"); return new Invite(message.getAttributeAsJid("from"), pw != null ? pw.getContent(): null); } } else { x = message.findChild("x","jabber:x:conference"); if (x != null) { return new Invite(x.getAttributeAsJid("jid"),x.getAttribute("password")); } } return null; } private void parseEvent(final Element event, final Jid from, final Account account) { Element items = event.findChild("items"); String node = items == null ? null : items.getAttribute("node"); if ("urn:xmpp:avatar:metadata".equals(node)) { Avatar avatar = Avatar.parseMetadata(items); if (avatar != null) { avatar.owner = from; if (mXmppConnectionService.getFileBackend().isAvatarCached(avatar)) { if (account.getJid().toBareJid().equals(from)) { if (account.setAvatar(avatar.getFilename())) { mXmppConnectionService.databaseBackend.updateAccount(account); } mXmppConnectionService.getAvatarService().clear(account); mXmppConnectionService.updateConversationUi(); mXmppConnectionService.updateAccountUi(); } else { Contact contact = account.getRoster().getContact(from); contact.setAvatar(avatar); mXmppConnectionService.getAvatarService().clear(contact); mXmppConnectionService.updateConversationUi(); mXmppConnectionService.updateRosterUi(); } } else { mXmppConnectionService.fetchAvatar(account, avatar); } } } else if ("http://jabber.org/protocol/nick".equals(node)) { Element i = items.findChild("item"); Element nick = i == null ? null : i.findChild("nick", "http://jabber.org/protocol/nick"); if (nick != null) { Contact contact = account.getRoster().getContact(from); contact.setPresenceName(nick.getContent()); mXmppConnectionService.getAvatarService().clear(account); mXmppConnectionService.updateConversationUi(); mXmppConnectionService.updateAccountUi(); } } else if (AxolotlService.PEP_DEVICE_LIST.equals(node)) { Log.d(Config.LOGTAG, AxolotlService.getLogprefix(account)+"Received PEP device list update from "+ from + ", processing..."); Element item = items.findChild("item"); Set deviceIds = mXmppConnectionService.getIqParser().deviceIds(item); AxolotlService axolotlService = account.getAxolotlService(); axolotlService.registerDevices(from, deviceIds); mXmppConnectionService.updateAccountUi(); } } private boolean handleErrorMessage(Account account, MessagePacket packet) { if (packet.getType() == MessagePacket.TYPE_ERROR) { Jid from = packet.getFrom(); if (from != null) { Element error = packet.findChild("error"); String text = error == null ? null : error.findChildContent("text"); if (text != null) { Log.d(Config.LOGTAG, account.getJid().toBareJid() + ": sending message to "+ from+ " failed - " + text); } else if (error != null) { Log.d(Config.LOGTAG, account.getJid().toBareJid() + ": sending message to "+ from+ " failed - " + error); } Message message = mXmppConnectionService.markMessage(account, from.toBareJid(), packet.getId(), Message.STATUS_SEND_FAILED); if (message != null && message.getEncryption() == Message.ENCRYPTION_OTR) { message.getConversation().endOtrIfNeeded(); } } return true; } return false; } @Override public void onMessagePacketReceived(Account account, MessagePacket original) { if (handleErrorMessage(account, original)) { return; } final MessagePacket packet; Long timestamp = null; final boolean isForwarded; boolean isCarbon = false; String serverMsgId = null; final Element fin = original.findChild("fin", "urn:xmpp:mam:0"); if (fin != null) { mXmppConnectionService.getMessageArchiveService().processFin(fin,original.getFrom()); return; } final Element result = original.findChild("result","urn:xmpp:mam:0"); final MessageArchiveService.Query query = result == null ? null : mXmppConnectionService.getMessageArchiveService().findQuery(result.getAttribute("queryid")); if (query != null && query.validFrom(original.getFrom())) { Pair f = original.getForwardedMessagePacket("result", "urn:xmpp:mam:0"); if (f == null) { return; } timestamp = f.second; packet = f.first; isForwarded = true; serverMsgId = result.getAttribute("id"); query.incrementTotalCount(); } else if (query != null) { Log.d(Config.LOGTAG,account.getJid().toBareJid()+": received mam result from invalid sender"); return; } else if (original.fromServer(account)) { Pair f; f = original.getForwardedMessagePacket("received", "urn:xmpp:carbons:2"); f = f == null ? original.getForwardedMessagePacket("sent", "urn:xmpp:carbons:2") : f; packet = f != null ? f.first : original; if (handleErrorMessage(account, packet)) { return; } timestamp = f != null ? f.second : null; isCarbon = f != null; isForwarded = isCarbon; } else { packet = original; isForwarded = false; } if (timestamp == null) { timestamp = AbstractParser.getTimestamp(packet, System.currentTimeMillis()); } final String body = packet.getBody(); final Element mucUserElement = packet.findChild("x", "http://jabber.org/protocol/muc#user"); final String pgpEncrypted = packet.findChildContent("x", "jabber:x:encrypted"); final Element axolotlEncrypted = packet.findChild(XmppAxolotlMessage.CONTAINERTAG, AxolotlService.PEP_PREFIX); int status; final Jid counterpart; final Jid to = packet.getTo(); final Jid from = packet.getFrom(); final String remoteMsgId = packet.getId(); if (from == null || to == null) { Log.d(Config.LOGTAG,"no to or from in: "+packet.toString()); return; } boolean isTypeGroupChat = packet.getType() == MessagePacket.TYPE_GROUPCHAT; boolean isProperlyAddressed = !to.isBareJid() || account.countPresences() == 1; boolean isMucStatusMessage = from.isBareJid() && mucUserElement != null && mucUserElement.hasChild("status"); if (packet.fromAccount(account)) { status = Message.STATUS_SEND; counterpart = to; } else { status = Message.STATUS_RECEIVED; counterpart = from; } Invite invite = extractInvite(packet); if (invite != null && invite.execute(account)) { return; } if (extractChatState(mXmppConnectionService.find(account, counterpart.toBareJid()), packet)) { mXmppConnectionService.updateConversationUi(); } if ((body != null || pgpEncrypted != null || axolotlEncrypted != null) && !isMucStatusMessage) { Conversation conversation = mXmppConnectionService.findOrCreateConversation(account, counterpart.toBareJid(), isTypeGroupChat); if (isTypeGroupChat) { if (counterpart.getResourcepart().equals(conversation.getMucOptions().getActualNick())) { status = Message.STATUS_SEND_RECEIVED; if (mXmppConnectionService.markMessage(conversation, remoteMsgId, status)) { return; } else if (remoteMsgId == null || Config.IGNORE_ID_REWRITE_IN_MUC) { Message message = conversation.findSentMessageWithBody(packet.getBody()); if (message != null) { mXmppConnectionService.markMessage(message, status); return; } } } else { status = Message.STATUS_RECEIVED; } } Message message; if (body != null && body.startsWith("?OTR")) { if (!isForwarded && !isTypeGroupChat && isProperlyAddressed) { message = parseOtrChat(body, from, remoteMsgId, conversation); if (message == null) { return; } } else { message = new Message(conversation, body, Message.ENCRYPTION_NONE, status); } } else if (pgpEncrypted != null) { message = new Message(conversation, pgpEncrypted, Message.ENCRYPTION_PGP, status); } else if (axolotlEncrypted != null) { message = parseAxolotlChat(axolotlEncrypted, from, remoteMsgId, conversation, status); if (message == null) { return; } } else { message = new Message(conversation, body, Message.ENCRYPTION_NONE, status); } message.setCounterpart(counterpart); message.setRemoteMsgId(remoteMsgId); message.setServerMsgId(serverMsgId); message.setCarbon(isCarbon); message.setTime(timestamp); message.markable = packet.hasChild("markable", "urn:xmpp:chat-markers:0"); if (conversation.getMode() == Conversation.MODE_MULTI) { Jid trueCounterpart = conversation.getMucOptions().getTrueCounterpart(counterpart.getResourcepart()); message.setTrueCounterpart(trueCounterpart); if (trueCounterpart != null) { updateLastseen(packet,account,trueCounterpart,false); } if (!isTypeGroupChat) { message.setType(Message.TYPE_PRIVATE); } } updateLastseen(packet,account,true); boolean checkForDuplicates = serverMsgId != null || (isTypeGroupChat && packet.hasChild("delay","urn:xmpp:delay")) || message.getType() == Message.TYPE_PRIVATE; if (checkForDuplicates && conversation.hasDuplicateMessage(message)) { Log.d(Config.LOGTAG,"skipping duplicate message from "+message.getCounterpart().toString()+" "+message.getBody()); return; } if (query != null) { query.incrementMessageCount(); } conversation.add(message); if (serverMsgId == null) { if (status == Message.STATUS_SEND || status == Message.STATUS_SEND_RECEIVED) { mXmppConnectionService.markRead(conversation); account.activateGracePeriod(); } else { message.markUnread(); } mXmppConnectionService.updateConversationUi(); } if (mXmppConnectionService.confirmMessages() && remoteMsgId != null && !isForwarded && !isTypeGroupChat) { if (packet.hasChild("markable", "urn:xmpp:chat-markers:0")) { MessagePacket receipt = mXmppConnectionService.getMessageGenerator().received(account, packet, "urn:xmpp:chat-markers:0", MessagePacket.TYPE_CHAT); mXmppConnectionService.sendMessagePacket(account, receipt); } if (packet.hasChild("request", "urn:xmpp:receipts")) { MessagePacket receipt = mXmppConnectionService.getMessageGenerator().received(account, packet, "urn:xmpp:receipts", packet.getType()); mXmppConnectionService.sendMessagePacket(account, receipt); } } if (account.getXmppConnection() != null && account.getXmppConnection().getFeatures().advancedStreamFeaturesLoaded()) { if (conversation.setLastMessageTransmitted(System.currentTimeMillis())) { mXmppConnectionService.updateConversation(conversation); } } if (message.getStatus() == Message.STATUS_RECEIVED && conversation.getOtrSession() != null && !conversation.getOtrSession().getSessionID().getUserID() .equals(message.getCounterpart().getResourcepart())) { conversation.endOtrIfNeeded(); } if (message.getEncryption() == Message.ENCRYPTION_NONE || mXmppConnectionService.saveEncryptedMessages()) { mXmppConnectionService.databaseBackend.createMessage(message); } final HttpConnectionManager manager = this.mXmppConnectionService.getHttpConnectionManager(); if (message.trusted() && message.treatAsDownloadable() != Message.Decision.NEVER && manager.getAutoAcceptFileSize() > 0) { manager.createNewDownloadConnection(message); } else if (!message.isRead()) { mXmppConnectionService.getNotificationService().push(message); } } else { //no body if (isTypeGroupChat) { Conversation conversation = mXmppConnectionService.find(account, from.toBareJid()); if (packet.hasChild("subject")) { if (conversation != null && conversation.getMode() == Conversation.MODE_MULTI) { conversation.setHasMessagesLeftOnServer(conversation.countMessages() > 0); conversation.getMucOptions().setSubject(packet.findChildContent("subject")); mXmppConnectionService.updateConversationUi(); return; } } if (conversation != null && isMucStatusMessage) { for (Element child : mucUserElement.getChildren()) { if (child.getName().equals("status") && MucOptions.STATUS_CODE_ROOM_CONFIG_CHANGED.equals(child.getAttribute("code"))) { mXmppConnectionService.fetchConferenceConfiguration(conversation); } } } } } Element received = packet.findChild("received", "urn:xmpp:chat-markers:0"); if (received == null) { received = packet.findChild("received", "urn:xmpp:receipts"); } if (received != null && !packet.fromAccount(account)) { mXmppConnectionService.markMessage(account, from.toBareJid(), received.getAttribute("id"), Message.STATUS_SEND_RECEIVED); } Element displayed = packet.findChild("displayed", "urn:xmpp:chat-markers:0"); if (displayed != null) { if (packet.fromAccount(account)) { Conversation conversation = mXmppConnectionService.find(account,counterpart.toBareJid()); if (conversation != null) { mXmppConnectionService.markRead(conversation); } } else { updateLastseen(packet, account, true); final Message displayedMessage = mXmppConnectionService.markMessage(account, from.toBareJid(), displayed.getAttribute("id"), Message.STATUS_SEND_DISPLAYED); Message message = displayedMessage == null ? null : displayedMessage.prev(); while (message != null && message.getStatus() == Message.STATUS_SEND_RECEIVED && message.getTimeSent() < displayedMessage.getTimeSent()) { mXmppConnectionService.markMessage(message, Message.STATUS_SEND_DISPLAYED); message = message.prev(); } } } Element event = packet.findChild("event", "http://jabber.org/protocol/pubsub#event"); if (event != null) { parseEvent(event, from, account); } String nick = packet.findChildContent("nick", "http://jabber.org/protocol/nick"); if (nick != null) { Contact contact = account.getRoster().getContact(from); contact.setPresenceName(nick); } } }