diff options
Diffstat (limited to 'src/main/java/de/pixart/messenger/generator/MessageGenerator.java')
| -rw-r--r-- | src/main/java/de/pixart/messenger/generator/MessageGenerator.java | 225 |
1 files changed, 225 insertions, 0 deletions
diff --git a/src/main/java/de/pixart/messenger/generator/MessageGenerator.java b/src/main/java/de/pixart/messenger/generator/MessageGenerator.java new file mode 100644 index 000000000..bf64f5bfd --- /dev/null +++ b/src/main/java/de/pixart/messenger/generator/MessageGenerator.java @@ -0,0 +1,225 @@ +package de.pixart.messenger.generator; + +import net.java.otr4j.OtrException; +import net.java.otr4j.session.Session; + +import java.text.SimpleDateFormat; +import java.util.ArrayList; +import java.util.Date; +import java.util.Locale; +import java.util.TimeZone; + +import de.pixart.messenger.Config; +import de.pixart.messenger.crypto.axolotl.AxolotlService; +import de.pixart.messenger.crypto.axolotl.XmppAxolotlMessage; +import de.pixart.messenger.entities.Account; +import de.pixart.messenger.entities.Contact; +import de.pixart.messenger.entities.Conversation; +import de.pixart.messenger.entities.Message; +import de.pixart.messenger.services.XmppConnectionService; +import de.pixart.messenger.xml.Element; +import de.pixart.messenger.xmpp.chatstate.ChatState; +import de.pixart.messenger.xmpp.jid.Jid; +import de.pixart.messenger.xmpp.stanzas.MessagePacket; + +public class MessageGenerator extends AbstractGenerator { + public static final String OTR_FALLBACK_MESSAGE = "I would like to start a private (OTR encrypted) conversation but your client doesn’t seem to support that"; + private static final String OMEMO_FALLBACK_MESSAGE = "I sent you an OMEMO encrypted message but your client doesn’t seem to support that. Find more information on https://conversations.im/omemo"; + private static final String PGP_FALLBACK_MESSAGE = "I sent you a PGP encrypted message but your client doesn’t seem to support that."; + + public MessageGenerator(XmppConnectionService service) { + super(service); + } + + private MessagePacket preparePacket(Message message) { + Conversation conversation = message.getConversation(); + Account account = conversation.getAccount(); + MessagePacket packet = new MessagePacket(); + if (conversation.getMode() == Conversation.MODE_SINGLE) { + packet.setTo(message.getCounterpart()); + packet.setType(MessagePacket.TYPE_CHAT); + packet.addChild("markable", "urn:xmpp:chat-markers:0"); + if (this.mXmppConnectionService.indicateReceived()) { + packet.addChild("request", "urn:xmpp:receipts"); + } + } else if (message.getType() == Message.TYPE_PRIVATE) { + packet.setTo(message.getCounterpart()); + packet.setType(MessagePacket.TYPE_CHAT); + if (this.mXmppConnectionService.indicateReceived()) { + packet.addChild("request", "urn:xmpp:receipts"); + } + } else { + packet.setTo(message.getCounterpart().toBareJid()); + packet.setType(MessagePacket.TYPE_GROUPCHAT); + } + packet.setFrom(account.getJid()); + packet.setId(message.getUuid()); + if (message.edited()) { + packet.addChild("replace","urn:xmpp:message-correct:0").setAttribute("id",message.getEditedId()); + } + return packet; + } + + public void addDelay(MessagePacket packet, long timestamp) { + final SimpleDateFormat mDateFormat = new SimpleDateFormat( + "yyyy-MM-dd'T'HH:mm:ss.SSS'Z'", Locale.US); + mDateFormat.setTimeZone(TimeZone.getTimeZone("UTC")); + Element delay = packet.addChild("delay", "urn:xmpp:delay"); + Date date = new Date(timestamp); + delay.setAttribute("stamp", mDateFormat.format(date)); + } + + public MessagePacket generateAxolotlChat(Message message, XmppAxolotlMessage axolotlMessage) { + MessagePacket packet = preparePacket(message); + if (axolotlMessage == null) { + return null; + } + packet.setAxolotlMessage(axolotlMessage.toElement()); + if (Config.supportUnencrypted() && !recipientSupportsOmemo(message)) { + packet.setBody(OMEMO_FALLBACK_MESSAGE); + } + packet.addChild("store", "urn:xmpp:hints"); + return packet; + } + + private static boolean recipientSupportsOmemo(Message message) { + Contact c = message.getContact(); + return c != null && c.getPresences().allOrNonSupport(AxolotlService.PEP_DEVICE_LIST_NOTIFY); + } + + public static void addMessageHints(MessagePacket packet) { + packet.addChild("private", "urn:xmpp:carbons:2"); + packet.addChild("no-copy", "urn:xmpp:hints"); + packet.addChild("no-permanent-store", "urn:xmpp:hints"); + packet.addChild("no-permanent-storage", "urn:xmpp:hints"); //do not copy this. this is wrong. it is *store* + } + + public MessagePacket generateOtrChat(Message message) { + Session otrSession = message.getConversation().getOtrSession(); + if (otrSession == null) { + return null; + } + MessagePacket packet = preparePacket(message); + addMessageHints(packet); + try { + String content; + if (message.hasFileOnRemoteHost()) { + content = message.getFileParams().url.toString(); + } else { + content = message.getBody(); + } + packet.setBody(otrSession.transformSending(content)[0]); + return packet; + } catch (OtrException e) { + return null; + } + } + + public MessagePacket generateChat(Message message) { + MessagePacket packet = preparePacket(message); + String content; + if (message.hasFileOnRemoteHost()) { + Message.FileParams fileParams = message.getFileParams(); + content = fileParams.url.toString(); + packet.addChild("x","jabber:x:oob").addChild("url").setContent(content); + } else { + content = message.getBody(); + } + packet.setBody(content); + return packet; + } + + public MessagePacket generatePgpChat(Message message) { + MessagePacket packet = preparePacket(message); + if (Config.supportUnencrypted()) { + packet.setBody(PGP_FALLBACK_MESSAGE); + } + if (message.getEncryption() == Message.ENCRYPTION_DECRYPTED) { + packet.addChild("x", "jabber:x:encrypted").setContent(message.getEncryptedBody()); + } else if (message.getEncryption() == Message.ENCRYPTION_PGP) { + packet.addChild("x", "jabber:x:encrypted").setContent(message.getBody()); + } + return packet; + } + + public MessagePacket generateChatState(Conversation conversation) { + final Account account = conversation.getAccount(); + MessagePacket packet = new MessagePacket(); + packet.setType(MessagePacket.TYPE_CHAT); + packet.setTo(conversation.getJid().toBareJid()); + packet.setFrom(account.getJid()); + packet.addChild(ChatState.toElement(conversation.getOutgoingChatState())); + packet.addChild("no-store", "urn:xmpp:hints"); + packet.addChild("no-storage", "urn:xmpp:hints"); //wrong! don't copy this. Its *store* + return packet; + } + + public MessagePacket confirm(final Account account, final Jid to, final String id) { + MessagePacket packet = new MessagePacket(); + packet.setType(MessagePacket.TYPE_CHAT); + packet.setTo(to); + packet.setFrom(account.getJid()); + Element received = packet.addChild("displayed","urn:xmpp:chat-markers:0"); + received.setAttribute("id", id); + packet.addChild("store", "urn:xmpp:hints"); + return packet; + } + + public MessagePacket conferenceSubject(Conversation conversation,String subject) { + MessagePacket packet = new MessagePacket(); + packet.setType(MessagePacket.TYPE_GROUPCHAT); + packet.setTo(conversation.getJid().toBareJid()); + Element subjectChild = new Element("subject"); + subjectChild.setContent(subject); + packet.addChild(subjectChild); + packet.setFrom(conversation.getAccount().getJid().toBareJid()); + return packet; + } + + public MessagePacket directInvite(final Conversation conversation, final Jid contact) { + MessagePacket packet = new MessagePacket(); + packet.setType(MessagePacket.TYPE_NORMAL); + packet.setTo(contact); + packet.setFrom(conversation.getAccount().getJid()); + Element x = packet.addChild("x", "jabber:x:conference"); + x.setAttribute("jid", conversation.getJid().toBareJid().toString()); + return packet; + } + + public MessagePacket invite(Conversation conversation, Jid contact) { + MessagePacket packet = new MessagePacket(); + packet.setTo(conversation.getJid().toBareJid()); + packet.setFrom(conversation.getAccount().getJid()); + Element x = new Element("x"); + x.setAttribute("xmlns", "http://jabber.org/protocol/muc#user"); + Element invite = new Element("invite"); + invite.setAttribute("to", contact.toBareJid().toString()); + x.addChild(invite); + packet.addChild(x); + return packet; + } + + public MessagePacket received(Account account, MessagePacket originalMessage, ArrayList<String> namespaces, int type) { + MessagePacket receivedPacket = new MessagePacket(); + receivedPacket.setType(type); + receivedPacket.setTo(originalMessage.getFrom()); + receivedPacket.setFrom(account.getJid()); + for(String namespace : namespaces) { + receivedPacket.addChild("received", namespace).setAttribute("id", originalMessage.getId()); + } + return receivedPacket; + } + + public MessagePacket generateOtrError(Jid to, String id, String errorText) { + MessagePacket packet = new MessagePacket(); + packet.setType(MessagePacket.TYPE_ERROR); + packet.setAttribute("id",id); + packet.setTo(to); + Element error = packet.addChild("error"); + error.setAttribute("code","406"); + error.setAttribute("type","modify"); + error.addChild("not-acceptable","urn:ietf:params:xml:ns:xmpp-stanzas"); + error.addChild("text").setContent("?OTR Error:" + errorText); + return packet; + } +} |