1package eu.siacs.conversations.generator;
2
3import java.net.URL;
4import java.text.SimpleDateFormat;
5import java.util.ArrayList;
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.http.P1S3UrlStreamHandler;
18import eu.siacs.conversations.services.XmppConnectionService;
19import eu.siacs.conversations.xml.Element;
20import eu.siacs.conversations.xml.Namespace;
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.stanzas.MessagePacket;
26import rocks.xmpp.addr.Jid;
27
28public class MessageGenerator extends AbstractGenerator {
29 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";
30 private static final String PGP_FALLBACK_MESSAGE = "I sent you a PGP encrypted message but your client doesn’t seem to support that.";
31
32 public MessageGenerator(XmppConnectionService service) {
33 super(service);
34 }
35
36 private MessagePacket preparePacket(Message message) {
37 Conversation conversation = (Conversation) message.getConversation();
38 Account account = conversation.getAccount();
39 MessagePacket packet = new MessagePacket();
40 final boolean isWithSelf = conversation.getContact().isSelf();
41 if (conversation.getMode() == Conversation.MODE_SINGLE) {
42 packet.setTo(message.getCounterpart());
43 packet.setType(MessagePacket.TYPE_CHAT);
44 if (!isWithSelf) {
45 packet.addChild("request", "urn:xmpp:receipts");
46 }
47 } else if (message.isPrivateMessage()) {
48 packet.setTo(message.getCounterpart());
49 packet.setType(MessagePacket.TYPE_CHAT);
50 packet.addChild("x", "http://jabber.org/protocol/muc#user");
51 packet.addChild("request", "urn:xmpp:receipts");
52 } else {
53 packet.setTo(message.getCounterpart().asBareJid());
54 packet.setType(MessagePacket.TYPE_GROUPCHAT);
55 }
56 if (conversation.isSingleOrPrivateAndNonAnonymous() && !message.isPrivateMessage()) {
57 packet.addChild("markable", "urn:xmpp:chat-markers:0");
58 }
59 packet.setFrom(account.getJid());
60 packet.setId(message.getUuid());
61 packet.addChild("origin-id", Namespace.STANZA_IDS).setAttribute("id", message.getUuid());
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 Message.FileParams fileParams = message.getFileParams();
105 final URL url = fileParams.url;
106 if (P1S3UrlStreamHandler.PROTOCOL_NAME.equals(url.getProtocol())) {
107 Element x = packet.addChild("x", Namespace.P1_S3_FILE_TRANSFER);
108 final String file = url.getFile();
109 x.setAttribute("name", file.charAt(0) == '/' ? file.substring(1) : file);
110 x.setAttribute("fileid", url.getHost());
111 return packet;
112 } else {
113 content = url.toString();
114 packet.addChild("x", Namespace.OOB).addChild("url").setContent(content);
115 }
116 } else {
117 content = message.getBody();
118 }
119 packet.setBody(content);
120 return packet;
121 }
122
123 public MessagePacket generatePgpChat(Message message) {
124 MessagePacket packet = preparePacket(message);
125 if (message.hasFileOnRemoteHost()) {
126 Message.FileParams fileParams = message.getFileParams();
127 final URL url = fileParams.url;
128 if (P1S3UrlStreamHandler.PROTOCOL_NAME.equals(url.getProtocol())) {
129 Element x = packet.addChild("x", Namespace.P1_S3_FILE_TRANSFER);
130 final String file = url.getFile();
131 x.setAttribute("name", file.charAt(0) == '/' ? file.substring(1) : file);
132 x.setAttribute("fileid", url.getHost());
133 } else {
134 packet.setBody(url.toString());
135 packet.addChild("x", Namespace.OOB).addChild("url").setContent(url.toString());
136 }
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 directInvite(final Conversation conversation, final Jid contact) {
196 MessagePacket packet = new MessagePacket();
197 packet.setType(MessagePacket.TYPE_NORMAL);
198 packet.setTo(contact);
199 packet.setFrom(conversation.getAccount().getJid());
200 Element x = packet.addChild("x", "jabber:x:conference");
201 x.setAttribute("jid", conversation.getJid().asBareJid().toString());
202 String password = conversation.getMucOptions().getPassword();
203 if (password != null) {
204 x.setAttribute("password", password);
205 }
206 if (contact.isFullJid()) {
207 packet.addChild("no-store", "urn:xmpp:hints");
208 packet.addChild("no-copy", "urn:xmpp:hints");
209 }
210 return packet;
211 }
212
213 public MessagePacket invite(Conversation conversation, Jid contact) {
214 MessagePacket packet = new MessagePacket();
215 packet.setTo(conversation.getJid().asBareJid());
216 packet.setFrom(conversation.getAccount().getJid());
217 Element x = new Element("x");
218 x.setAttribute("xmlns", "http://jabber.org/protocol/muc#user");
219 Element invite = new Element("invite");
220 invite.setAttribute("to", contact.asBareJid().toString());
221 x.addChild(invite);
222 packet.addChild(x);
223 return packet;
224 }
225
226 public MessagePacket received(Account account, MessagePacket originalMessage, ArrayList<String> namespaces, int type) {
227 MessagePacket receivedPacket = new MessagePacket();
228 receivedPacket.setType(type);
229 receivedPacket.setTo(originalMessage.getFrom());
230 receivedPacket.setFrom(account.getJid());
231 for (String namespace : namespaces) {
232 receivedPacket.addChild("received", namespace).setAttribute("id", originalMessage.getId());
233 }
234 receivedPacket.addChild("store", "urn:xmpp:hints");
235 return receivedPacket;
236 }
237
238 public MessagePacket received(Account account, Jid to, String id) {
239 MessagePacket packet = new MessagePacket();
240 packet.setFrom(account.getJid());
241 packet.setTo(to);
242 packet.addChild("received", "urn:xmpp:receipts").setAttribute("id", id);
243 packet.addChild("store", "urn:xmpp:hints");
244 return packet;
245 }
246
247 public MessagePacket sessionProposal(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 packet.setId(JingleRtpConnection.JINGLE_MESSAGE_PROPOSE_ID_PREFIX + proposal.sessionId);
252 final Element propose = packet.addChild("propose", Namespace.JINGLE_MESSAGE);
253 propose.setAttribute("id", proposal.sessionId);
254 for (final Media media : proposal.media) {
255 propose.addChild("description", Namespace.JINGLE_APPS_RTP).setAttribute("media", media.toString());
256 }
257
258 packet.addChild("request", "urn:xmpp:receipts");
259 packet.addChild("store", "urn:xmpp:hints");
260 return packet;
261 }
262
263 public MessagePacket sessionRetract(final JingleConnectionManager.RtpSessionProposal proposal) {
264 final MessagePacket packet = new MessagePacket();
265 packet.setType(MessagePacket.TYPE_CHAT); //we want to carbon copy those
266 packet.setTo(proposal.with);
267 final Element propose = packet.addChild("retract", Namespace.JINGLE_MESSAGE);
268 propose.setAttribute("id", proposal.sessionId);
269 propose.addChild("description", Namespace.JINGLE_APPS_RTP);
270 packet.addChild("store", "urn:xmpp:hints");
271 return packet;
272 }
273
274 public MessagePacket sessionReject(final Jid with, final String sessionId) {
275 final MessagePacket packet = new MessagePacket();
276 packet.setType(MessagePacket.TYPE_CHAT); //we want to carbon copy those
277 packet.setTo(with);
278 final Element propose = packet.addChild("reject", Namespace.JINGLE_MESSAGE);
279 propose.setAttribute("id", sessionId);
280 propose.addChild("description", Namespace.JINGLE_APPS_RTP);
281 packet.addChild("store", "urn:xmpp:hints");
282 return packet;
283 }
284}