package de.gultsch.chat.utils; import java.util.List; import net.java.otr4j.session.Session; import net.java.otr4j.session.SessionStatus; import android.util.Log; import de.gultsch.chat.entities.Account; import de.gultsch.chat.entities.Conversation; import de.gultsch.chat.entities.Message; import de.gultsch.chat.services.XmppConnectionService; import de.gultsch.chat.xml.Element; import de.gultsch.chat.xmpp.MessagePacket; public class MessageParser { protected static final String LOGTAG = "xmppService"; public static Message parsePlainTextChat(MessagePacket packet, Account account, XmppConnectionService service) { String[] fromParts = packet.getFrom().split("/"); Conversation conversation = service.findOrCreateConversation(account, fromParts[0],false); String body = packet.getBody(); return new Message(conversation, packet.getFrom(), body, Message.ENCRYPTION_NONE, Message.STATUS_RECIEVED); } public static Message parseOtrChat(MessagePacket packet, Account account, XmppConnectionService service) { String[] fromParts = packet.getFrom().split("/"); Conversation conversation = service.findOrCreateConversation(account, fromParts[0],false); String body = packet.getBody(); if (!conversation.hasValidOtrSession()) { conversation.startOtrSession(service.getApplicationContext(), fromParts[1]); } try { Session otrSession = conversation.getOtrSession(); SessionStatus before = otrSession .getSessionStatus(); body = otrSession.transformReceiving(body); SessionStatus after = otrSession.getSessionStatus(); if ((before != after) && (after == SessionStatus.ENCRYPTED)) { Log.d(LOGTAG, "otr session etablished"); List messages = conversation .getMessages(); for (int i = 0; i < messages.size(); ++i) { Message msg = messages.get(i); if ((msg.getStatus() == Message.STATUS_UNSEND) && (msg.getEncryption() == Message.ENCRYPTION_OTR)) { MessagePacket outPacket = service.prepareMessagePacket( account, msg, otrSession); msg.setStatus(Message.STATUS_SEND); service.databaseBackend.updateMessage(msg); account.getXmppConnection() .sendMessagePacket(outPacket); } } if (service.convChangedListener!=null) { service.convChangedListener.onConversationListChanged(); } } else if ((before != after) && (after == SessionStatus.FINISHED)) { conversation.resetOtrSession(); Log.d(LOGTAG,"otr session stoped"); } } catch (Exception e) { Log.d(LOGTAG, "error receiving otr. resetting"); conversation.resetOtrSession(); return null; } if (body == null) { return null; } return new Message(conversation, packet.getFrom(), body, Message.ENCRYPTION_OTR,Message.STATUS_RECIEVED); } public static Message parseGroupchat(MessagePacket packet, Account account, XmppConnectionService service) { int status; String[] fromParts = packet.getFrom().split("/"); Conversation conversation = service.findOrCreateConversation(account, fromParts[0],true); if ((fromParts.length == 1) || (packet.hasChild("subject"))) { return null; } String counterPart = fromParts[1]; if (counterPart.equals(account.getUsername())) { status = Message.STATUS_SEND; } else { status = Message.STATUS_RECIEVED; } return new Message(conversation, counterPart, packet.getBody(), Message.ENCRYPTION_NONE, status); } public static Message parseCarbonMessage(MessagePacket packet, Account account, XmppConnectionService service) { // TODO Auto-generated method stub int status; String fullJid; Element forwarded; if (packet.hasChild("received")) { forwarded = packet.findChild("received").findChild( "forwarded"); status = Message.STATUS_RECIEVED; } else if (packet.hasChild("sent")) { forwarded = packet.findChild("sent").findChild( "forwarded"); status = Message.STATUS_SEND; } else { return null; } Element message = forwarded.findChild("message"); if ((message == null) || (!message.hasChild("body"))) return null; // either malformed or boring if (status == Message.STATUS_RECIEVED) { fullJid = message.getAttribute("from"); } else { fullJid = message.getAttribute("to"); } String[] parts = fullJid.split("/"); Conversation conversation = service.findOrCreateConversation(account, parts[0],false); return new Message(conversation,fullJid, message.findChild("body").getContent(), Message.ENCRYPTION_NONE,status); } public static Message parseError(MessagePacket packet, Account account, XmppConnectionService service) { String[] fromParts = packet.getFrom().split("/"); Conversation conversation = service.findOrCreateConversation(account, fromParts[0],false); Element error = packet.findChild("error"); String errorName = error.getChildren().get(0).getName(); String displayError; if (errorName.equals("service-unavailable")) { displayError = "Contact is offline and does not have offline storage"; } else { displayError = errorName.replace("-", " "); } return new Message(conversation, packet.getFrom(), displayError, Message.ENCRYPTION_NONE, Message.STATUS_ERROR); } }