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