diff options
Diffstat (limited to 'src/main/java/eu/siacs/conversations/parser/MessageParser.java')
| -rw-r--r-- | src/main/java/eu/siacs/conversations/parser/MessageParser.java | 561 |
1 files changed, 561 insertions, 0 deletions
diff --git a/src/main/java/eu/siacs/conversations/parser/MessageParser.java b/src/main/java/eu/siacs/conversations/parser/MessageParser.java new file mode 100644 index 00000000..073cc849 --- /dev/null +++ b/src/main/java/eu/siacs/conversations/parser/MessageParser.java @@ -0,0 +1,561 @@ +package eu.siacs.conversations.parser; + +import android.util.Log; +import android.util.Pair; + +import de.tzur.conversations.Settings; + +import net.java.otr4j.session.Session; +import net.java.otr4j.session.SessionStatus; + +import java.net.URL; +import java.util.ArrayList; +import java.util.Set; + +import de.thedevstack.android.logcat.Logging; +import de.thedevstack.conversationsplus.ConversationsPlusPreferences; +import de.thedevstack.conversationsplus.utils.AvatarUtil; +import eu.siacs.conversations.Config; +import eu.siacs.conversations.crypto.axolotl.AxolotlService; +import eu.siacs.conversations.crypto.axolotl.AxolotlService; +import eu.siacs.conversations.crypto.axolotl.AxolotlServiceImpl; +import eu.siacs.conversations.crypto.axolotl.XmppAxolotlMessage; +import eu.siacs.conversations.entities.Account; +import eu.siacs.conversations.entities.Bookmark; +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.AvatarService; +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, 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()); + Logging.d(Config.LOGTAG, AxolotlServiceImpl.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 static String extractStanzaId(Element packet, Jid by) { + for(Element child : packet.getChildren()) { + if (child.getName().equals("stanza-id") + && "urn:xmpp:sid:0".equals(child.getNamespace()) + && by.equals(child.getAttributeAsJid("by"))) { + return child.getAttribute("id"); + } + } + 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.toBareJid(); + if (AvatarUtil.isAvatarCached(avatar)) { + if (account.getJid().toBareJid().equals(from)) { + if (account.setAvatar(avatar.getFilename())) { + mXmppConnectionService.databaseBackend.updateAccount(account); + } + AvatarService.getInstance().clear(account); + mXmppConnectionService.updateConversationUi(); + mXmppConnectionService.updateAccountUi(); + } else { + Contact contact = account.getRoster().getContact(from); + contact.setAvatar(avatar); + AvatarService.getInstance().clear(contact); + mXmppConnectionService.updateConversationUi(); + mXmppConnectionService.updateRosterUi(); + } + } else { + AvatarService.getInstance().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 && nick.getContent() != null) { + Contact contact = account.getRoster().getContact(from); + contact.setPresenceName(nick.getContent()); + AvatarService.getInstance().clear(account); + mXmppConnectionService.updateConversationUi(); + mXmppConnectionService.updateAccountUi(); + } + } else if (ConversationsPlusPreferences.omemoEnabled() && AxolotlService.PEP_DEVICE_LIST.equals(node)) { + Log.d(Config.LOGTAG, AxolotlServiceImpl.getLogprefix(account)+"Received PEP device list update from "+ from + ", processing..."); + Element item = items.findChild("item"); + Set<Integer> 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<MessagePacket, Long> 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.incrementMessageCount(); + } else if (query != null) { + Logging.d(Config.LOGTAG,account.getJid().toBareJid()+": received mam result from invalid sender"); + return; + } else if (original.fromServer(account)) { + Pair<MessagePacket, Long> 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 oob = packet.findChild("x", "jabber:x:oob"); + final boolean isOob = oob!= null && body != null && body.equals(oob.findChildContent("url")); + 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) { + Log.d(Config.LOGTAG,"no from in: "+packet.toString()); + return; + } + + boolean isTypeGroupChat = packet.getType() == MessagePacket.TYPE_GROUPCHAT; + boolean isProperlyAddressed = (to != null ) && (!to.isBareJid() || account.countPresences() <= 1); + boolean isMucStatusMessage = from.isBareJid() && mucUserElement != null && mucUserElement.hasChild("status"); + if (packet.fromAccount(account)) { + status = Message.STATUS_SEND; + counterpart = to != null ? to : account.getJid(); + } 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, query); + if (isTypeGroupChat) { + if (counterpart.getResourcepart().equals(conversation.getMucOptions().getActualNick())) { + status = Message.STATUS_SEND_RECEIVED; + isCarbon = true; //not really carbon but received from another resource + 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") && Config.supportOtr()) { + if (!isForwarded && !isTypeGroupChat && isProperlyAddressed) { + message = parseOtrChat(body, from, remoteMsgId, conversation); + if (message == null) { + return; + } + } else { + Logging.d(Config.LOGTAG,account.getJid().toBareJid()+": ignoring OTR message from "+from+" isForwarded="+Boolean.toString(isForwarded)+", isProperlyAddressed="+Boolean.valueOf(isProperlyAddressed)); + message = new Message(conversation, body, Message.ENCRYPTION_NONE, status); + } + } else if (pgpEncrypted != null && Config.supportOpenPgp()) { + message = new Message(conversation, pgpEncrypted, Message.ENCRYPTION_PGP, status); + } else if (axolotlEncrypted != null && Config.supportOmemo()) { + Jid origin; + if (conversation.getMode() == Conversation.MODE_MULTI) { + origin = conversation.getMucOptions().getTrueCounterpart(counterpart.getResourcepart()); + if (origin == null) { + Log.d(Config.LOGTAG,"axolotl message in non anonymous conference received"); + return; + } + } else { + origin = from; + } + message = parseAxolotlChat(axolotlEncrypted, origin, conversation, status); + if (message == null) { + return; + } + } else { + message = new Message(conversation, body, Message.ENCRYPTION_NONE, status); + } + + if (serverMsgId == null) { + serverMsgId = extractStanzaId(packet, isTypeGroupChat ? conversation.getJid().toBareJid() : account.getServer()); + } + + message.setCounterpart(counterpart); + message.setRemoteMsgId(remoteMsgId); + message.setServerMsgId(serverMsgId); + message.setCarbon(isCarbon); + message.setTime(timestamp); + message.setOob(isOob); + 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(timestamp, account, trueCounterpart, false); + } + if (!isTypeGroupChat) { + message.setType(Message.TYPE_PRIVATE); + } + } else { + updateLastseen(timestamp, account, packet.getFrom(), true); + } + + boolean checkForDuplicates = query != 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.getPagingOrder() == MessageArchiveService.PagingOrder.REVERSE) { + conversation.prepend(message); + } else { + conversation.add(message); + } + + if (message.getEncryption() == Message.ENCRYPTION_PGP) { + conversation.getAccount().getPgpDecryptionService().add(message); + } + + if (query == null || query.getWith() == null) { //either no mam or catchup + if (status == Message.STATUS_SEND || status == Message.STATUS_SEND_RECEIVED) { + mXmppConnectionService.markRead(conversation); + if (query == null) { + account.activateGracePeriod(); + } + } else { + // only not mam messages should be marked as unread + if (query == null) { + message.markUnread(); + } + } + } + + if (query == null) { + mXmppConnectionService.updateConversationUi(); + } + + if (Settings.CONFIRM_MESSAGE_READ && remoteMsgId != null && !isForwarded && !isTypeGroupChat) { + sendMessageReceipts(account, packet); + } + + 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 || !ConversationsPlusPreferences.dontSaveEncrypted()) { + mXmppConnectionService.databaseBackend.createMessage(message); + } + if (message.trusted() + && message.treatAsDownloadable() != Message.Decision.NEVER + && ConversationsPlusPreferences.autoAcceptFileSize() > 0 + && ConversationsPlusPreferences.autoDownloadFileLink()) { + this.mXmppConnectionService.getHttpConnectionManager().createNewDownloadConnection(message); + } else { + if (query == null) { + mXmppConnectionService.getNotificationService().push(message); + } else if (query.getWith() == null) { // mam catchup + /* + Like suggested in https://bugs.thedevstack.de/task/156 user should be notified + in some other way of loaded messages. + */ + // mXmppConnectionService.getNotificationService().pushFromBacklog(message); + } + } + } else if (!packet.hasChild("body")){ //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); + String subject = packet.findChildContent("subject"); + conversation.getMucOptions().setSubject(subject); + final Bookmark bookmark = conversation.getBookmark(); + if (bookmark != null && bookmark.getBookmarkName() == null) { + if (bookmark.setBookmarkName(subject)) { + mXmppConnectionService.pushBookmarks(account); + } + } + 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(timestamp, account, packet.getFrom(), 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); + } + } + + private void sendMessageReceipts(Account account, MessagePacket packet) { + ArrayList<String> receiptsNamespaces = new ArrayList<>(); + if (packet.hasChild("markable", "urn:xmpp:chat-markers:0")) { + receiptsNamespaces.add("urn:xmpp:chat-markers:0"); + } + if (packet.hasChild("request", "urn:xmpp:receipts")) { + receiptsNamespaces.add("urn:xmpp:receipts"); + } + if (receiptsNamespaces.size() > 0) { + MessagePacket receipt = mXmppConnectionService.getMessageGenerator().received(account, + packet, + receiptsNamespaces, + packet.getType()); + mXmppConnectionService.sendMessagePacket(account, receipt); + } + } +} |