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