private static Message rawMessage(MessageContent content, Chat chat, boolean encrypted) {
Message smackMessage = new Message();
// text
String text = content.getPlainText();
if (!text.isEmpty()) smackMessage.setBody(content.getPlainText());
// attachment
MessageContent.Attachment att = content.getAttachment().orElse(null);
if (att != null) {
OutOfBandData oobData =
new OutOfBandData(att.getURL().toString(), att.getMimeType(), att.getLength(), encrypted);
smackMessage.addExtension(oobData);
MessageContent.Preview preview = content.getPreview().orElse(null);
if (preview != null) {
String data = EncodingUtils.bytesToBase64(preview.getData());
BitsOfBinary bob = new BitsOfBinary(preview.getMimeType(), data);
smackMessage.addExtension(bob);
}
}
// group command
if (chat instanceof KonGroupChat) {
KonGroupChat groupChat = (KonGroupChat) chat;
KonGroupData gid = groupChat.getGroupData();
MessageContent.GroupCommand groupCommand = content.getGroupCommand().orElse(null);
smackMessage.addExtension(
groupCommand != null
? ClientUtils.groupCommandToGroupExtension(groupChat, groupCommand)
: new GroupExtension(gid.id, gid.owner.string()));
}
return smackMessage;
}
boolean sendMessage(OutMessage message, boolean sendChatState) {
// check for correct receipt status and reset it
KonMessage.Status status = message.getStatus();
assert status == KonMessage.Status.PENDING || status == KonMessage.Status.ERROR;
message.setStatus(KonMessage.Status.PENDING);
if (!mClient.isConnected()) {
LOGGER.info("not sending message(s), not connected");
return false;
}
MessageContent content = message.getContent();
MessageContent.Attachment att = content.getAttachment().orElse(null);
if (att != null && !att.hasURL()) {
LOGGER.warning("attachment not uploaded");
message.setStatus(KonMessage.Status.ERROR);
return false;
}
boolean encrypted =
message.getCoderStatus().getEncryption() != Coder.Encryption.NOT
|| message.getCoderStatus().getSigning() != Coder.Signing.NOT;
Chat chat = message.getChat();
Message protoMessage = encrypted ? new Message() : rawMessage(content, chat, false);
protoMessage.setType(Message.Type.chat);
protoMessage.setStanzaId(message.getXMPPID());
String threadID = chat.getXMPPID();
if (!threadID.isEmpty()) protoMessage.setThread(threadID);
// extensions
// TODO with group chat? (for muc "NOT RECOMMENDED")
if (!chat.isGroupChat()) protoMessage.addExtension(new DeliveryReceiptRequest());
if (sendChatState) protoMessage.addExtension(new ChatStateExtension(ChatState.active));
if (encrypted) {
byte[] encryptedData =
content.isComplex() || chat.isGroupChat()
? Coder.encryptStanza(message, rawMessage(content, chat, true).toXML().toString())
.orElse(null)
: Coder.encryptMessage(message).orElse(null);
// check also for security errors just to be sure
if (encryptedData == null || !message.getCoderStatus().getErrors().isEmpty()) {
LOGGER.warning("encryption failed");
message.setStatus(KonMessage.Status.ERROR);
mControl.handleSecurityErrors(message);
return false;
}
protoMessage.addExtension(new E2EEncryption(encryptedData));
}
// transmission specific
Transmission[] transmissions = message.getTransmissions();
ArrayList<Message> sendMessages = new ArrayList<>(transmissions.length);
for (Transmission transmission : message.getTransmissions()) {
Message sendMessage = protoMessage.clone();
JID to = transmission.getJID();
if (!to.isValid()) {
LOGGER.warning("invalid JID: " + to);
return false;
}
sendMessage.setTo(to.string());
sendMessages.add(sendMessage);
}
return mClient.sendPackets(sendMessages.toArray(new Message[0]));
}