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.Message;
16import eu.siacs.conversations.http.P1S3UrlStreamHandler;
17import eu.siacs.conversations.services.XmppConnectionService;
18import eu.siacs.conversations.xml.Element;
19import eu.siacs.conversations.xml.Namespace;
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;
25import rocks.xmpp.addr.Jid;
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 packet.addChild("origin-id", Namespace.STANZA_IDS).setAttribute("id", message.getUuid());
61 if (message.edited()) {
62 packet.addChild("replace", "urn:xmpp:message-correct:0").setAttribute("id", message.getEditedIdWireFormat());
63 }
64 return packet;
65 }
66
67 public void addDelay(MessagePacket packet, long timestamp) {
68 final SimpleDateFormat mDateFormat = new SimpleDateFormat(
69 "yyyy-MM-dd'T'HH:mm:ss.SSS'Z'", Locale.US);
70 mDateFormat.setTimeZone(TimeZone.getTimeZone("UTC"));
71 Element delay = packet.addChild("delay", "urn:xmpp:delay");
72 Date date = new Date(timestamp);
73 delay.setAttribute("stamp", mDateFormat.format(date));
74 }
75
76 public MessagePacket generateAxolotlChat(Message message, XmppAxolotlMessage axolotlMessage) {
77 MessagePacket packet = preparePacket(message);
78 if (axolotlMessage == null) {
79 return null;
80 }
81 packet.setAxolotlMessage(axolotlMessage.toElement());
82 packet.setBody(OMEMO_FALLBACK_MESSAGE);
83 packet.addChild("store", "urn:xmpp:hints");
84 packet.addChild("encryption", "urn:xmpp:eme:0")
85 .setAttribute("name", "OMEMO")
86 .setAttribute("namespace", AxolotlService.PEP_PREFIX);
87 return packet;
88 }
89
90 public MessagePacket generateKeyTransportMessage(Jid to, XmppAxolotlMessage axolotlMessage) {
91 MessagePacket packet = new MessagePacket();
92 packet.setType(MessagePacket.TYPE_CHAT);
93 packet.setTo(to);
94 packet.setAxolotlMessage(axolotlMessage.toElement());
95 packet.addChild("store", "urn:xmpp:hints");
96 return packet;
97 }
98
99 public MessagePacket generateChat(Message message) {
100 MessagePacket packet = preparePacket(message);
101 String content;
102 if (message.hasFileOnRemoteHost()) {
103 Message.FileParams fileParams = message.getFileParams();
104 final URL url = fileParams.url;
105 if (P1S3UrlStreamHandler.PROTOCOL_NAME.equals(url.getProtocol())) {
106 Element x = packet.addChild("x", Namespace.P1_S3_FILE_TRANSFER);
107 final String file = url.getFile();
108 x.setAttribute("name", file.charAt(0) == '/' ? file.substring(1) : file);
109 x.setAttribute("fileid", url.getHost());
110 return packet;
111 } else {
112 content = url.toString();
113 packet.addChild("x", Namespace.OOB).addChild("url").setContent(content);
114 }
115 } else {
116 content = message.getBody();
117 }
118 packet.setBody(content);
119 return packet;
120 }
121
122 public MessagePacket generatePgpChat(Message message) {
123 MessagePacket packet = preparePacket(message);
124 if (message.hasFileOnRemoteHost()) {
125 Message.FileParams fileParams = message.getFileParams();
126 final URL url = fileParams.url;
127 if (P1S3UrlStreamHandler.PROTOCOL_NAME.equals(url.getProtocol())) {
128 Element x = packet.addChild("x", Namespace.P1_S3_FILE_TRANSFER);
129 final String file = url.getFile();
130 x.setAttribute("name", file.charAt(0) == '/' ? file.substring(1) : file);
131 x.setAttribute("fileid", url.getHost());
132 } else {
133 packet.setBody(url.toString());
134 packet.addChild("x", Namespace.OOB).addChild("url").setContent(url.toString());
135 }
136 } else {
137 if (Config.supportUnencrypted()) {
138 packet.setBody(PGP_FALLBACK_MESSAGE);
139 }
140 if (message.getEncryption() == Message.ENCRYPTION_DECRYPTED) {
141 packet.addChild("x", "jabber:x:encrypted").setContent(message.getEncryptedBody());
142 } else if (message.getEncryption() == Message.ENCRYPTION_PGP) {
143 packet.addChild("x", "jabber:x:encrypted").setContent(message.getBody());
144 }
145 packet.addChild("encryption", "urn:xmpp:eme:0")
146 .setAttribute("namespace", "jabber:x:encrypted");
147 }
148 return packet;
149 }
150
151 public MessagePacket generateChatState(Conversation conversation) {
152 final Account account = conversation.getAccount();
153 MessagePacket packet = new MessagePacket();
154 packet.setType(conversation.getMode() == Conversation.MODE_MULTI ? MessagePacket.TYPE_GROUPCHAT : MessagePacket.TYPE_CHAT);
155 packet.setTo(conversation.getJid().asBareJid());
156 packet.setFrom(account.getJid());
157 packet.addChild(ChatState.toElement(conversation.getOutgoingChatState()));
158 packet.addChild("no-store", "urn:xmpp:hints");
159 packet.addChild("no-storage", "urn:xmpp:hints"); //wrong! don't copy this. Its *store*
160 return packet;
161 }
162
163 public MessagePacket confirm(final Account account, final Jid to, final String id, final Jid counterpart, final boolean groupChat) {
164 MessagePacket packet = new MessagePacket();
165 packet.setType(groupChat ? MessagePacket.TYPE_GROUPCHAT : MessagePacket.TYPE_CHAT);
166 packet.setTo(groupChat ? to.asBareJid() : to);
167 packet.setFrom(account.getJid());
168 Element displayed = packet.addChild("displayed", "urn:xmpp:chat-markers:0");
169 displayed.setAttribute("id", id);
170 if (groupChat && counterpart != null) {
171 displayed.setAttribute("sender", counterpart.toString());
172 }
173 packet.addChild("store", "urn:xmpp:hints");
174 return packet;
175 }
176
177 public MessagePacket conferenceSubject(Conversation conversation, String subject) {
178 MessagePacket packet = new MessagePacket();
179 packet.setType(MessagePacket.TYPE_GROUPCHAT);
180 packet.setTo(conversation.getJid().asBareJid());
181 packet.addChild("subject").setContent(subject);
182 packet.setFrom(conversation.getAccount().getJid().asBareJid());
183 return packet;
184 }
185
186 public MessagePacket directInvite(final Conversation conversation, final Jid contact) {
187 MessagePacket packet = new MessagePacket();
188 packet.setType(MessagePacket.TYPE_NORMAL);
189 packet.setTo(contact);
190 packet.setFrom(conversation.getAccount().getJid());
191 Element x = packet.addChild("x", "jabber:x:conference");
192 x.setAttribute("jid", conversation.getJid().asBareJid().toString());
193 String password = conversation.getMucOptions().getPassword();
194 if (password != null) {
195 x.setAttribute("password", password);
196 }
197 if (contact.isFullJid()) {
198 packet.addChild("no-store", "urn:xmpp:hints");
199 packet.addChild("no-copy", "urn:xmpp:hints");
200 }
201 return packet;
202 }
203
204 public MessagePacket invite(Conversation conversation, Jid contact) {
205 MessagePacket packet = new MessagePacket();
206 packet.setTo(conversation.getJid().asBareJid());
207 packet.setFrom(conversation.getAccount().getJid());
208 Element x = new Element("x");
209 x.setAttribute("xmlns", "http://jabber.org/protocol/muc#user");
210 Element invite = new Element("invite");
211 invite.setAttribute("to", contact.asBareJid().toString());
212 x.addChild(invite);
213 packet.addChild(x);
214 return packet;
215 }
216
217 public MessagePacket received(Account account, MessagePacket originalMessage, ArrayList<String> namespaces, int type) {
218 MessagePacket receivedPacket = new MessagePacket();
219 receivedPacket.setType(type);
220 receivedPacket.setTo(originalMessage.getFrom());
221 receivedPacket.setFrom(account.getJid());
222 for (String namespace : namespaces) {
223 receivedPacket.addChild("received", namespace).setAttribute("id", originalMessage.getId());
224 }
225 receivedPacket.addChild("store", "urn:xmpp:hints");
226 return receivedPacket;
227 }
228
229 public MessagePacket received(Account account, Jid to, String id) {
230 MessagePacket packet = new MessagePacket();
231 packet.setFrom(account.getJid());
232 packet.setTo(to);
233 packet.addChild("received", "urn:xmpp:receipts").setAttribute("id", id);
234 packet.addChild("store", "urn:xmpp:hints");
235 return packet;
236 }
237
238 public MessagePacket sessionProposal(final JingleConnectionManager.RtpSessionProposal proposal) {
239 final MessagePacket packet = new MessagePacket();
240 packet.setType(MessagePacket.TYPE_CHAT); //we want to carbon copy those
241 packet.setTo(proposal.with);
242 packet.setId(JingleRtpConnection.JINGLE_MESSAGE_PROPOSE_ID_PREFIX + proposal.sessionId);
243 final Element propose = packet.addChild("propose", Namespace.JINGLE_MESSAGE);
244 propose.setAttribute("id", proposal.sessionId);
245 for (final Media media : proposal.media) {
246 propose.addChild("description", Namespace.JINGLE_APPS_RTP).setAttribute("media", media.toString());
247 }
248
249 packet.addChild("request", "urn:xmpp:receipts");
250 packet.addChild("store", "urn:xmpp:hints");
251 return packet;
252 }
253
254 public MessagePacket sessionRetract(final JingleConnectionManager.RtpSessionProposal proposal) {
255 final MessagePacket packet = new MessagePacket();
256 packet.setType(MessagePacket.TYPE_CHAT); //we want to carbon copy those
257 packet.setTo(proposal.with);
258 final Element propose = packet.addChild("retract", Namespace.JINGLE_MESSAGE);
259 propose.setAttribute("id", proposal.sessionId);
260 propose.addChild("description", Namespace.JINGLE_APPS_RTP);
261 packet.addChild("store", "urn:xmpp:hints");
262 return packet;
263 }
264
265 public MessagePacket sessionReject(final Jid with, final String sessionId) {
266 final MessagePacket packet = new MessagePacket();
267 packet.setType(MessagePacket.TYPE_CHAT); //we want to carbon copy those
268 packet.setTo(with);
269 final Element propose = packet.addChild("reject", Namespace.JINGLE_MESSAGE);
270 propose.setAttribute("id", sessionId);
271 propose.addChild("description", Namespace.JINGLE_APPS_RTP);
272 packet.addChild("store", "urn:xmpp:hints");
273 return packet;
274 }
275}