238 lines
8.0 KiB
Java
238 lines
8.0 KiB
Java
package eu.siacs.conversations.parser;
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import java.util.List;
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import net.java.otr4j.session.Session;
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import net.java.otr4j.session.SessionStatus;
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import android.util.Log;
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import eu.siacs.conversations.entities.Account;
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import eu.siacs.conversations.entities.Contact;
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import eu.siacs.conversations.entities.Conversation;
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import eu.siacs.conversations.entities.Message;
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import eu.siacs.conversations.services.XmppConnectionService;
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import eu.siacs.conversations.xml.Element;
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import eu.siacs.conversations.xmpp.stanzas.MessagePacket;
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public class MessageParser {
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protected static final String LOGTAG = "xmppService";
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private XmppConnectionService mXmppConnectionService;
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public MessageParser(XmppConnectionService service) {
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this.mXmppConnectionService = service;
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}
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public Message parseChat(MessagePacket packet, Account account) {
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String[] fromParts = packet.getFrom().split("/");
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Conversation conversation = mXmppConnectionService
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.findOrCreateConversation(account, fromParts[0], false);
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conversation.setLatestMarkableMessageId(getMarkableMessageId(packet));
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updateLastseen(packet, account);
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String pgpBody = getPgpBody(packet);
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if (pgpBody != null) {
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return new Message(conversation, packet.getFrom(), pgpBody,
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Message.ENCRYPTION_PGP, Message.STATUS_RECIEVED);
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} else {
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return new Message(conversation, packet.getFrom(),
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packet.getBody(), Message.ENCRYPTION_NONE,
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Message.STATUS_RECIEVED);
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}
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}
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public Message parseOtrChat(MessagePacket packet, Account account) {
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boolean properlyAddressed = (packet.getTo().split("/").length == 2)
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|| (account.countPresences() == 1);
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String[] fromParts = packet.getFrom().split("/");
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Conversation conversation = mXmppConnectionService
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.findOrCreateConversation(account, fromParts[0], false);
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updateLastseen(packet, account);
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String body = packet.getBody();
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if (!conversation.hasValidOtrSession()) {
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if (properlyAddressed) {
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Log.d("xmppService",
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"starting new otr session with "
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+ packet.getFrom()
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+ " because no valid otr session has been found");
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conversation.startOtrSession(
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mXmppConnectionService.getApplicationContext(),
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fromParts[1], false);
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} else {
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Log.d("xmppService", account.getJid()
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+ ": ignoring otr session with " + fromParts[0]);
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return null;
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}
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} else {
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String foreignPresence = conversation.getOtrSession()
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.getSessionID().getUserID();
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if (!foreignPresence.equals(fromParts[1])) {
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conversation.resetOtrSession();
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if (properlyAddressed) {
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Log.d("xmppService",
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"replacing otr session with " + packet.getFrom());
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conversation.startOtrSession(
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mXmppConnectionService.getApplicationContext(),
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fromParts[1], false);
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} else {
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return null;
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}
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}
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}
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try {
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Session otrSession = conversation.getOtrSession();
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SessionStatus before = otrSession.getSessionStatus();
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body = otrSession.transformReceiving(body);
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SessionStatus after = otrSession.getSessionStatus();
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if ((before != after) && (after == SessionStatus.ENCRYPTED)) {
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Log.d(LOGTAG, "otr session etablished");
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List<Message> messages = conversation.getMessages();
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for (int i = 0; i < messages.size(); ++i) {
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Message msg = messages.get(i);
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if ((msg.getStatus() == Message.STATUS_UNSEND)
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&& (msg.getEncryption() == Message.ENCRYPTION_OTR)) {
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MessagePacket outPacket = mXmppConnectionService
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.prepareMessagePacket(account, msg, otrSession);
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msg.setStatus(Message.STATUS_SEND);
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mXmppConnectionService.databaseBackend
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.updateMessage(msg);
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account.getXmppConnection()
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.sendMessagePacket(outPacket);
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}
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}
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mXmppConnectionService.updateUi(conversation, false);
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} else if ((before != after) && (after == SessionStatus.FINISHED)) {
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conversation.resetOtrSession();
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Log.d(LOGTAG, "otr session stoped");
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}
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// isEmpty is a work around for some weird clients which send emtpty
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// strings over otr
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if ((body == null) || (body.isEmpty())) {
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return null;
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}
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conversation.setLatestMarkableMessageId(getMarkableMessageId(packet));
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return new Message(conversation, packet.getFrom(), body,
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Message.ENCRYPTION_OTR, Message.STATUS_RECIEVED);
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} catch (Exception e) {
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conversation.resetOtrSession();
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return null;
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}
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}
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public Message parseGroupchat(MessagePacket packet, Account account) {
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int status;
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String[] fromParts = packet.getFrom().split("/");
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Conversation conversation = mXmppConnectionService
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.findOrCreateConversation(account, fromParts[0], true);
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if (packet.hasChild("subject")) {
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conversation.getMucOptions().setSubject(
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packet.findChild("subject").getContent());
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mXmppConnectionService.updateUi(conversation, false);
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return null;
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}
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if ((fromParts.length == 1)) {
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return null;
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}
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String counterPart = fromParts[1];
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if (counterPart.equals(conversation.getMucOptions().getNick())) {
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if (mXmppConnectionService.markMessage(conversation,
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packet.getId(), Message.STATUS_SEND)) {
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return null;
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} else {
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status = Message.STATUS_SEND;
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}
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} else {
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status = Message.STATUS_RECIEVED;
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}
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String pgpBody = getPgpBody(packet);
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conversation.setLatestMarkableMessageId(getMarkableMessageId(packet));
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if (pgpBody == null) {
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return new Message(conversation, counterPart, packet.getBody(),
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Message.ENCRYPTION_NONE, status);
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} else {
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return new Message(conversation, counterPart, pgpBody,
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Message.ENCRYPTION_PGP, status);
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}
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}
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public Message parseCarbonMessage(MessagePacket packet, Account account) {
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int status;
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String fullJid;
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Element forwarded;
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if (packet.hasChild("received")) {
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forwarded = packet.findChild("received").findChild("forwarded");
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status = Message.STATUS_RECIEVED;
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} else if (packet.hasChild("sent")) {
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forwarded = packet.findChild("sent").findChild("forwarded");
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status = Message.STATUS_SEND;
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} else {
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return null;
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}
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if (forwarded == null) {
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return null;
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}
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Element message = forwarded.findChild("message");
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if ((message == null) || (!message.hasChild("body")))
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return null; // either malformed or boring
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if (status == Message.STATUS_RECIEVED) {
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fullJid = message.getAttribute("from");
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updateLastseen(message, account);
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} else {
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fullJid = message.getAttribute("to");
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}
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String[] parts = fullJid.split("/");
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Conversation conversation = mXmppConnectionService
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.findOrCreateConversation(account, parts[0], false);
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conversation.setLatestMarkableMessageId(getMarkableMessageId(packet));
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String pgpBody = getPgpBody(message);
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if (pgpBody != null) {
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return new Message(conversation, fullJid, pgpBody,
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Message.ENCRYPTION_PGP, status);
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} else {
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String body = message.findChild("body").getContent();
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return new Message(conversation, fullJid, body,
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Message.ENCRYPTION_NONE, status);
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}
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}
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public void parseError(MessagePacket packet, Account account) {
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String[] fromParts = packet.getFrom().split("/");
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mXmppConnectionService.markMessage(account, fromParts[0],
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packet.getId(), Message.STATUS_SEND_FAILED);
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}
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private String getPgpBody(Element message) {
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Element child = message.findChild("x", "jabber:x:encrypted");
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if (child == null) {
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return null;
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} else {
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return child.getContent();
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}
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}
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private String getMarkableMessageId(Element message) {
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if (message.hasChild("markable", "urn:xmpp:chat-markers:0")) {
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return message.getAttribute("id");
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} else {
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return null;
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}
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}
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private void updateLastseen(Element message, Account account) {
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String[] fromParts = message.getAttribute("from").split("/");
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String from = fromParts[0];
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String presence = null;
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if (fromParts.length >= 2) {
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presence = fromParts[1];
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}
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Contact contact = account.getRoster().getContact(from);
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if (presence!=null) {
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contact.lastseen.presence = presence;
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contact.lastseen.time = System.currentTimeMillis();
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} else if ((contact.getPresences().size() == 1)&&(contact.getPresences().containsKey(contact.lastseen.presence))) {
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contact.lastseen.time = System.currentTimeMillis();
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} else {
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contact.lastseen.presence = null;
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contact.lastseen.time = System.currentTimeMillis();
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}
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}
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}
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