1package eu.siacs.conversations.generator;
2
3import eu.siacs.conversations.Config;
4import eu.siacs.conversations.crypto.axolotl.AxolotlService;
5import eu.siacs.conversations.crypto.axolotl.XmppAxolotlMessage;
6import eu.siacs.conversations.entities.Account;
7import eu.siacs.conversations.entities.Conversation;
8import eu.siacs.conversations.entities.Conversational;
9import eu.siacs.conversations.entities.Message;
10import eu.siacs.conversations.services.XmppConnectionService;
11import eu.siacs.conversations.xml.Element;
12import eu.siacs.conversations.xml.Namespace;
13import eu.siacs.conversations.xmpp.Jid;
14import eu.siacs.conversations.xmpp.chatstate.ChatState;
15import eu.siacs.conversations.xmpp.jingle.JingleConnectionManager;
16import eu.siacs.conversations.xmpp.jingle.JingleRtpConnection;
17import eu.siacs.conversations.xmpp.jingle.Media;
18import eu.siacs.conversations.xmpp.jingle.stanzas.Reason;
19import im.conversations.android.xmpp.model.correction.Replace;
20import im.conversations.android.xmpp.model.reactions.Reaction;
21import im.conversations.android.xmpp.model.reactions.Reactions;
22import im.conversations.android.xmpp.model.unique.OriginId;
23import java.text.SimpleDateFormat;
24import java.util.ArrayList;
25import java.util.Collection;
26import java.util.Date;
27import java.util.Locale;
28import java.util.TimeZone;
29
30public class MessageGenerator extends AbstractGenerator {
31 private static final String OMEMO_FALLBACK_MESSAGE =
32 "I sent you an OMEMO encrypted message but your client doesn’t seem to support that."
33 + " Find more information on https://conversations.im/omemo";
34 private static final String PGP_FALLBACK_MESSAGE =
35 "I sent you a PGP encrypted message but your client doesn’t seem to support that.";
36
37 public MessageGenerator(XmppConnectionService service) {
38 super(service);
39 }
40
41 private im.conversations.android.xmpp.model.stanza.Message preparePacket(
42 final Message message) {
43 Conversation conversation = (Conversation) message.getConversation();
44 Account account = conversation.getAccount();
45 im.conversations.android.xmpp.model.stanza.Message packet =
46 new im.conversations.android.xmpp.model.stanza.Message();
47 final boolean isWithSelf = conversation.getContact().isSelf();
48 if (conversation.getMode() == Conversation.MODE_SINGLE) {
49 packet.setTo(message.getCounterpart());
50 packet.setType(im.conversations.android.xmpp.model.stanza.Message.Type.CHAT);
51 if (!isWithSelf) {
52 packet.addChild("request", "urn:xmpp:receipts");
53 }
54 } else if (message.isPrivateMessage()) {
55 packet.setTo(message.getCounterpart());
56 packet.setType(im.conversations.android.xmpp.model.stanza.Message.Type.CHAT);
57 packet.addChild("x", "http://jabber.org/protocol/muc#user");
58 packet.addChild("request", "urn:xmpp:receipts");
59 } else {
60 packet.setTo(message.getCounterpart().asBareJid());
61 packet.setType(im.conversations.android.xmpp.model.stanza.Message.Type.GROUPCHAT);
62 }
63 if (conversation.isSingleOrPrivateAndNonAnonymous() && !message.isPrivateMessage()) {
64 packet.addChild("markable", "urn:xmpp:chat-markers:0");
65 }
66 packet.setFrom(account.getJid());
67 packet.setId(message.getUuid());
68 if (conversation.getMode() == Conversational.MODE_MULTI
69 && !message.isPrivateMessage()
70 && !conversation.getMucOptions().stableId()) {
71 packet.addExtension(new OriginId(message.getUuid()));
72 }
73 if (message.edited()) {
74 packet.addExtension(new Replace(message.getEditedIdWireFormat()));
75 }
76 return packet;
77 }
78
79 public void addDelay(
80 im.conversations.android.xmpp.model.stanza.Message packet, long timestamp) {
81 final SimpleDateFormat mDateFormat =
82 new SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ss.SSS'Z'", Locale.US);
83 mDateFormat.setTimeZone(TimeZone.getTimeZone("UTC"));
84 Element delay = packet.addChild("delay", "urn:xmpp:delay");
85 Date date = new Date(timestamp);
86 delay.setAttribute("stamp", mDateFormat.format(date));
87 }
88
89 public im.conversations.android.xmpp.model.stanza.Message generateAxolotlChat(
90 Message message, XmppAxolotlMessage axolotlMessage) {
91 im.conversations.android.xmpp.model.stanza.Message packet = preparePacket(message);
92 if (axolotlMessage == null) {
93 return null;
94 }
95 packet.setAxolotlMessage(axolotlMessage.toElement());
96 packet.setBody(OMEMO_FALLBACK_MESSAGE);
97 packet.addChild("store", "urn:xmpp:hints");
98 packet.addChild("encryption", "urn:xmpp:eme:0")
99 .setAttribute("name", "OMEMO")
100 .setAttribute("namespace", AxolotlService.PEP_PREFIX);
101 return packet;
102 }
103
104 public im.conversations.android.xmpp.model.stanza.Message generateKeyTransportMessage(
105 Jid to, XmppAxolotlMessage axolotlMessage) {
106 im.conversations.android.xmpp.model.stanza.Message packet =
107 new im.conversations.android.xmpp.model.stanza.Message();
108 packet.setType(im.conversations.android.xmpp.model.stanza.Message.Type.CHAT);
109 packet.setTo(to);
110 packet.setAxolotlMessage(axolotlMessage.toElement());
111 packet.addChild("store", "urn:xmpp:hints");
112 return packet;
113 }
114
115 public im.conversations.android.xmpp.model.stanza.Message generateChat(Message message) {
116 im.conversations.android.xmpp.model.stanza.Message packet = preparePacket(message);
117 String content;
118 if (message.hasFileOnRemoteHost()) {
119 final Message.FileParams fileParams = message.getFileParams();
120 content = fileParams.url;
121 packet.addChild("x", Namespace.OOB).addChild("url").setContent(content);
122 } else {
123 content = message.getBody();
124 }
125 packet.setBody(content);
126 return packet;
127 }
128
129 public im.conversations.android.xmpp.model.stanza.Message generatePgpChat(Message message) {
130 final im.conversations.android.xmpp.model.stanza.Message packet = preparePacket(message);
131 if (message.hasFileOnRemoteHost()) {
132 Message.FileParams fileParams = message.getFileParams();
133 final String url = fileParams.url;
134 packet.setBody(url);
135 packet.addChild("x", Namespace.OOB).addChild("url").setContent(url);
136 } else {
137 if (Config.supportUnencrypted()) {
138 packet.setBody(PGP_FALLBACK_MESSAGE);
139 }
140 if (message.getEncryption() == Message.ENCRYPTION_DECRYPTED) {
141 packet.addChild("x", "jabber:x:encrypted").setContent(message.getEncryptedBody());
142 } else if (message.getEncryption() == Message.ENCRYPTION_PGP) {
143 packet.addChild("x", "jabber:x:encrypted").setContent(message.getBody());
144 }
145 packet.addChild("encryption", "urn:xmpp:eme:0")
146 .setAttribute("namespace", "jabber:x:encrypted");
147 }
148 return packet;
149 }
150
151 public im.conversations.android.xmpp.model.stanza.Message generateChatState(
152 Conversation conversation) {
153 final Account account = conversation.getAccount();
154 final im.conversations.android.xmpp.model.stanza.Message packet =
155 new im.conversations.android.xmpp.model.stanza.Message();
156 packet.setType(
157 conversation.getMode() == Conversation.MODE_MULTI
158 ? im.conversations.android.xmpp.model.stanza.Message.Type.GROUPCHAT
159 : im.conversations.android.xmpp.model.stanza.Message.Type.CHAT);
160 packet.setTo(conversation.getJid().asBareJid());
161 packet.setFrom(account.getJid());
162 packet.addChild(ChatState.toElement(conversation.getOutgoingChatState()));
163 packet.addChild("no-store", "urn:xmpp:hints");
164 packet.addChild("no-storage", "urn:xmpp:hints"); // wrong! don't copy this. Its *store*
165 return packet;
166 }
167
168 public im.conversations.android.xmpp.model.stanza.Message confirm(final Message message) {
169 final boolean groupChat = message.getConversation().getMode() == Conversational.MODE_MULTI;
170 final Jid to = message.getCounterpart();
171 final im.conversations.android.xmpp.model.stanza.Message packet =
172 new im.conversations.android.xmpp.model.stanza.Message();
173 packet.setType(
174 groupChat
175 ? im.conversations.android.xmpp.model.stanza.Message.Type.GROUPCHAT
176 : im.conversations.android.xmpp.model.stanza.Message.Type.CHAT);
177 packet.setTo(groupChat ? to.asBareJid() : to);
178 final Element displayed = packet.addChild("displayed", "urn:xmpp:chat-markers:0");
179 if (groupChat) {
180 final String stanzaId = message.getServerMsgId();
181 if (stanzaId != null) {
182 displayed.setAttribute("id", stanzaId);
183 } else {
184 displayed.setAttribute("sender", to.toString());
185 displayed.setAttribute("id", message.getRemoteMsgId());
186 }
187 } else {
188 displayed.setAttribute("id", message.getRemoteMsgId());
189 }
190 packet.addChild("store", "urn:xmpp:hints");
191 return packet;
192 }
193
194 public im.conversations.android.xmpp.model.stanza.Message reaction(
195 final Jid to,
196 final boolean groupChat,
197 final String reactingTo,
198 final Collection<String> ourReactions) {
199 final im.conversations.android.xmpp.model.stanza.Message packet =
200 new im.conversations.android.xmpp.model.stanza.Message();
201 packet.setType(
202 groupChat
203 ? im.conversations.android.xmpp.model.stanza.Message.Type.GROUPCHAT
204 : im.conversations.android.xmpp.model.stanza.Message.Type.CHAT);
205 packet.setTo(to);
206 final var reactions = packet.addExtension(new Reactions());
207 reactions.setId(reactingTo);
208 for (final String ourReaction : ourReactions) {
209 reactions.addExtension(new Reaction(ourReaction));
210 }
211 packet.addChild("store", "urn:xmpp:hints");
212 return packet;
213 }
214
215 public im.conversations.android.xmpp.model.stanza.Message conferenceSubject(
216 Conversation conversation, String subject) {
217 im.conversations.android.xmpp.model.stanza.Message packet =
218 new im.conversations.android.xmpp.model.stanza.Message();
219 packet.setType(im.conversations.android.xmpp.model.stanza.Message.Type.GROUPCHAT);
220 packet.setTo(conversation.getJid().asBareJid());
221 packet.addChild("subject").setContent(subject);
222 packet.setFrom(conversation.getAccount().getJid().asBareJid());
223 return packet;
224 }
225
226 public im.conversations.android.xmpp.model.stanza.Message directInvite(
227 final Conversation conversation, final Jid contact) {
228 im.conversations.android.xmpp.model.stanza.Message packet =
229 new im.conversations.android.xmpp.model.stanza.Message();
230 packet.setType(im.conversations.android.xmpp.model.stanza.Message.Type.NORMAL);
231 packet.setTo(contact);
232 packet.setFrom(conversation.getAccount().getJid());
233 Element x = packet.addChild("x", "jabber:x:conference");
234 x.setAttribute("jid", conversation.getJid().asBareJid());
235 String password = conversation.getMucOptions().getPassword();
236 if (password != null) {
237 x.setAttribute("password", password);
238 }
239 if (contact.isFullJid()) {
240 packet.addChild("no-store", "urn:xmpp:hints");
241 packet.addChild("no-copy", "urn:xmpp:hints");
242 }
243 return packet;
244 }
245
246 public im.conversations.android.xmpp.model.stanza.Message invite(
247 final Conversation conversation, final Jid contact) {
248 final var packet = new im.conversations.android.xmpp.model.stanza.Message();
249 packet.setTo(conversation.getJid().asBareJid());
250 packet.setFrom(conversation.getAccount().getJid());
251 Element x = new Element("x");
252 x.setAttribute("xmlns", "http://jabber.org/protocol/muc#user");
253 Element invite = new Element("invite");
254 invite.setAttribute("to", contact.asBareJid());
255 x.addChild(invite);
256 packet.addChild(x);
257 return packet;
258 }
259
260 public im.conversations.android.xmpp.model.stanza.Message received(
261 Account account,
262 final Jid from,
263 final String id,
264 ArrayList<String> namespaces,
265 im.conversations.android.xmpp.model.stanza.Message.Type type) {
266 final var receivedPacket = new im.conversations.android.xmpp.model.stanza.Message();
267 receivedPacket.setType(type);
268 receivedPacket.setTo(from);
269 receivedPacket.setFrom(account.getJid());
270 for (final String namespace : namespaces) {
271 receivedPacket.addChild("received", namespace).setAttribute("id", id);
272 }
273 receivedPacket.addChild("store", "urn:xmpp:hints");
274 return receivedPacket;
275 }
276
277 public im.conversations.android.xmpp.model.stanza.Message received(
278 Account account, Jid to, String id) {
279 im.conversations.android.xmpp.model.stanza.Message packet =
280 new im.conversations.android.xmpp.model.stanza.Message();
281 packet.setFrom(account.getJid());
282 packet.setTo(to);
283 packet.addChild("received", "urn:xmpp:receipts").setAttribute("id", id);
284 packet.addChild("store", "urn:xmpp:hints");
285 return packet;
286 }
287
288 public im.conversations.android.xmpp.model.stanza.Message sessionFinish(
289 final Jid with, final String sessionId, final Reason reason) {
290 final im.conversations.android.xmpp.model.stanza.Message packet =
291 new im.conversations.android.xmpp.model.stanza.Message();
292 packet.setType(im.conversations.android.xmpp.model.stanza.Message.Type.CHAT);
293 packet.setTo(with);
294 final Element finish = packet.addChild("finish", Namespace.JINGLE_MESSAGE);
295 finish.setAttribute("id", sessionId);
296 final Element reasonElement = finish.addChild("reason", Namespace.JINGLE);
297 reasonElement.addChild(reason.toString());
298 packet.addChild("store", "urn:xmpp:hints");
299 return packet;
300 }
301
302 public im.conversations.android.xmpp.model.stanza.Message sessionProposal(
303 final JingleConnectionManager.RtpSessionProposal proposal) {
304 final im.conversations.android.xmpp.model.stanza.Message packet =
305 new im.conversations.android.xmpp.model.stanza.Message();
306 packet.setType(
307 im.conversations.android.xmpp.model.stanza.Message.Type
308 .CHAT); // we want to carbon copy those
309 packet.setTo(proposal.with);
310 packet.setId(JingleRtpConnection.JINGLE_MESSAGE_PROPOSE_ID_PREFIX + proposal.sessionId);
311 final Element propose = packet.addChild("propose", Namespace.JINGLE_MESSAGE);
312 propose.setAttribute("id", proposal.sessionId);
313 for (final Media media : proposal.media) {
314 propose.addChild("description", Namespace.JINGLE_APPS_RTP)
315 .setAttribute("media", media.toString());
316 }
317 packet.addChild("request", "urn:xmpp:receipts");
318 packet.addChild("store", "urn:xmpp:hints");
319 return packet;
320 }
321
322 public im.conversations.android.xmpp.model.stanza.Message sessionRetract(
323 final JingleConnectionManager.RtpSessionProposal proposal) {
324 final im.conversations.android.xmpp.model.stanza.Message packet =
325 new im.conversations.android.xmpp.model.stanza.Message();
326 packet.setType(
327 im.conversations.android.xmpp.model.stanza.Message.Type
328 .CHAT); // we want to carbon copy those
329 packet.setTo(proposal.with);
330 final Element propose = packet.addChild("retract", Namespace.JINGLE_MESSAGE);
331 propose.setAttribute("id", proposal.sessionId);
332 propose.addChild("description", Namespace.JINGLE_APPS_RTP);
333 packet.addChild("store", "urn:xmpp:hints");
334 return packet;
335 }
336
337 public im.conversations.android.xmpp.model.stanza.Message sessionReject(
338 final Jid with, final String sessionId) {
339 final im.conversations.android.xmpp.model.stanza.Message packet =
340 new im.conversations.android.xmpp.model.stanza.Message();
341 packet.setType(
342 im.conversations.android.xmpp.model.stanza.Message.Type
343 .CHAT); // we want to carbon copy those
344 packet.setTo(with);
345 final Element propose = packet.addChild("reject", Namespace.JINGLE_MESSAGE);
346 propose.setAttribute("id", sessionId);
347 propose.addChild("description", Namespace.JINGLE_APPS_RTP);
348 packet.addChild("store", "urn:xmpp:hints");
349 return packet;
350 }
351}