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-rw-r--r--src/main/java/eu/siacs/conversations/parser/MessageParser.java561
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diff --git a/src/main/java/eu/siacs/conversations/parser/MessageParser.java b/src/main/java/eu/siacs/conversations/parser/MessageParser.java
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+++ 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);
+ }
+ }
+}