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