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