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.stanzas.MessagePacket;
23import rocks.xmpp.addr.Jid;
24
25public class MessageGenerator extends AbstractGenerator {
26 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";
27 private static final String PGP_FALLBACK_MESSAGE = "I sent you a PGP encrypted message but your client doesn’t seem to support that.";
28
29 public MessageGenerator(XmppConnectionService service) {
30 super(service);
31 }
32
33 private MessagePacket preparePacket(Message message) {
34 Conversation conversation = (Conversation) message.getConversation();
35 Account account = conversation.getAccount();
36 MessagePacket packet = new MessagePacket();
37 final boolean isWithSelf = conversation.getContact().isSelf();
38 if (conversation.getMode() == Conversation.MODE_SINGLE) {
39 packet.setTo(message.getCounterpart());
40 packet.setType(MessagePacket.TYPE_CHAT);
41 if (!isWithSelf) {
42 packet.addChild("request", "urn:xmpp:receipts");
43 }
44 } else if (message.isPrivateMessage()) {
45 packet.setTo(message.getCounterpart());
46 packet.setType(MessagePacket.TYPE_CHAT);
47 packet.addChild("x", "http://jabber.org/protocol/muc#user");
48 packet.addChild("request", "urn:xmpp:receipts");
49 } else {
50 packet.setTo(message.getCounterpart().asBareJid());
51 packet.setType(MessagePacket.TYPE_GROUPCHAT);
52 }
53 if (conversation.isSingleOrPrivateAndNonAnonymous() && !message.isPrivateMessage()) {
54 packet.addChild("markable", "urn:xmpp:chat-markers:0");
55 }
56 packet.setFrom(account.getJid());
57 packet.setId(message.getUuid());
58 packet.addChild("origin-id", Namespace.STANZA_IDS).setAttribute("id", message.getUuid());
59 if (message.edited()) {
60 packet.addChild("replace", "urn:xmpp:message-correct:0").setAttribute("id", message.getEditedIdWireFormat());
61 }
62 return packet;
63 }
64
65 public void addDelay(MessagePacket packet, long timestamp) {
66 final SimpleDateFormat mDateFormat = new SimpleDateFormat(
67 "yyyy-MM-dd'T'HH:mm:ss.SSS'Z'", Locale.US);
68 mDateFormat.setTimeZone(TimeZone.getTimeZone("UTC"));
69 Element delay = packet.addChild("delay", "urn:xmpp:delay");
70 Date date = new Date(timestamp);
71 delay.setAttribute("stamp", mDateFormat.format(date));
72 }
73
74 public MessagePacket generateAxolotlChat(Message message, XmppAxolotlMessage axolotlMessage) {
75 MessagePacket packet = preparePacket(message);
76 if (axolotlMessage == null) {
77 return null;
78 }
79 packet.setAxolotlMessage(axolotlMessage.toElement());
80 packet.setBody(OMEMO_FALLBACK_MESSAGE);
81 packet.addChild("store", "urn:xmpp:hints");
82 packet.addChild("encryption", "urn:xmpp:eme:0")
83 .setAttribute("name", "OMEMO")
84 .setAttribute("namespace", AxolotlService.PEP_PREFIX);
85 return packet;
86 }
87
88 public MessagePacket generateKeyTransportMessage(Jid to, XmppAxolotlMessage axolotlMessage) {
89 MessagePacket packet = new MessagePacket();
90 packet.setType(MessagePacket.TYPE_CHAT);
91 packet.setTo(to);
92 packet.setAxolotlMessage(axolotlMessage.toElement());
93 packet.addChild("store", "urn:xmpp:hints");
94 return packet;
95 }
96
97 public MessagePacket generateChat(Message message) {
98 MessagePacket packet = preparePacket(message);
99 String content;
100 if (message.hasFileOnRemoteHost()) {
101 Message.FileParams fileParams = message.getFileParams();
102 final URL url = fileParams.url;
103 if (P1S3UrlStreamHandler.PROTOCOL_NAME.equals(url.getProtocol())) {
104 Element x = packet.addChild("x", Namespace.P1_S3_FILE_TRANSFER);
105 final String file = url.getFile();
106 x.setAttribute("name", file.charAt(0) == '/' ? file.substring(1) : file);
107 x.setAttribute("fileid", url.getHost());
108 return packet;
109 } else {
110 content = url.toString();
111 packet.addChild("x", Namespace.OOB).addChild("url").setContent(content);
112 }
113 } else {
114 content = message.getBody();
115 }
116 packet.setBody(content);
117 return packet;
118 }
119
120 public MessagePacket generatePgpChat(Message message) {
121 MessagePacket packet = preparePacket(message);
122 if (message.hasFileOnRemoteHost()) {
123 Message.FileParams fileParams = message.getFileParams();
124 final URL url = fileParams.url;
125 if (P1S3UrlStreamHandler.PROTOCOL_NAME.equals(url.getProtocol())) {
126 Element x = packet.addChild("x", Namespace.P1_S3_FILE_TRANSFER);
127 final String file = url.getFile();
128 x.setAttribute("name", file.charAt(0) == '/' ? file.substring(1) : file);
129 x.setAttribute("fileid", url.getHost());
130 } else {
131 packet.setBody(url.toString());
132 packet.addChild("x", Namespace.OOB).addChild("url").setContent(url.toString());
133 }
134 } else {
135 if (Config.supportUnencrypted()) {
136 packet.setBody(PGP_FALLBACK_MESSAGE);
137 }
138 if (message.getEncryption() == Message.ENCRYPTION_DECRYPTED) {
139 packet.addChild("x", "jabber:x:encrypted").setContent(message.getEncryptedBody());
140 } else if (message.getEncryption() == Message.ENCRYPTION_PGP) {
141 packet.addChild("x", "jabber:x:encrypted").setContent(message.getBody());
142 }
143 packet.addChild("encryption", "urn:xmpp:eme:0")
144 .setAttribute("namespace", "jabber:x:encrypted");
145 }
146 return packet;
147 }
148
149 public MessagePacket generateChatState(Conversation conversation) {
150 final Account account = conversation.getAccount();
151 MessagePacket packet = new MessagePacket();
152 packet.setType(conversation.getMode() == Conversation.MODE_MULTI ? MessagePacket.TYPE_GROUPCHAT : MessagePacket.TYPE_CHAT);
153 packet.setTo(conversation.getJid().asBareJid());
154 packet.setFrom(account.getJid());
155 packet.addChild(ChatState.toElement(conversation.getOutgoingChatState()));
156 packet.addChild("no-store", "urn:xmpp:hints");
157 packet.addChild("no-storage", "urn:xmpp:hints"); //wrong! don't copy this. Its *store*
158 return packet;
159 }
160
161 public MessagePacket confirm(final Account account, final Jid to, final String id, final Jid counterpart, final boolean groupChat) {
162 MessagePacket packet = new MessagePacket();
163 packet.setType(groupChat ? MessagePacket.TYPE_GROUPCHAT : MessagePacket.TYPE_CHAT);
164 packet.setTo(groupChat ? to.asBareJid() : to);
165 packet.setFrom(account.getJid());
166 Element displayed = packet.addChild("displayed", "urn:xmpp:chat-markers:0");
167 displayed.setAttribute("id", id);
168 if (groupChat && counterpart != null) {
169 displayed.setAttribute("sender", counterpart.toString());
170 }
171 packet.addChild("store", "urn:xmpp:hints");
172 return packet;
173 }
174
175 public MessagePacket conferenceSubject(Conversation conversation, String subject) {
176 MessagePacket packet = new MessagePacket();
177 packet.setType(MessagePacket.TYPE_GROUPCHAT);
178 packet.setTo(conversation.getJid().asBareJid());
179 packet.addChild("subject").setContent(subject);
180 packet.setFrom(conversation.getAccount().getJid().asBareJid());
181 return packet;
182 }
183
184 public MessagePacket directInvite(final Conversation conversation, final Jid contact) {
185 MessagePacket packet = new MessagePacket();
186 packet.setType(MessagePacket.TYPE_NORMAL);
187 packet.setTo(contact);
188 packet.setFrom(conversation.getAccount().getJid());
189 Element x = packet.addChild("x", "jabber:x:conference");
190 x.setAttribute("jid", conversation.getJid().asBareJid().toString());
191 String password = conversation.getMucOptions().getPassword();
192 if (password != null) {
193 x.setAttribute("password", password);
194 }
195 if (contact.isFullJid()) {
196 packet.addChild("no-store", "urn:xmpp:hints");
197 packet.addChild("no-copy", "urn:xmpp:hints");
198 }
199 return packet;
200 }
201
202 public MessagePacket invite(Conversation conversation, Jid contact) {
203 MessagePacket packet = new MessagePacket();
204 packet.setTo(conversation.getJid().asBareJid());
205 packet.setFrom(conversation.getAccount().getJid());
206 Element x = new Element("x");
207 x.setAttribute("xmlns", "http://jabber.org/protocol/muc#user");
208 Element invite = new Element("invite");
209 invite.setAttribute("to", contact.asBareJid().toString());
210 x.addChild(invite);
211 packet.addChild(x);
212 return packet;
213 }
214
215 public MessagePacket received(Account account, MessagePacket originalMessage, ArrayList<String> namespaces, int type) {
216 MessagePacket receivedPacket = new MessagePacket();
217 receivedPacket.setType(type);
218 receivedPacket.setTo(originalMessage.getFrom());
219 receivedPacket.setFrom(account.getJid());
220 for (String namespace : namespaces) {
221 receivedPacket.addChild("received", namespace).setAttribute("id", originalMessage.getId());
222 }
223 receivedPacket.addChild("store", "urn:xmpp:hints");
224 return receivedPacket;
225 }
226
227 public MessagePacket received(Account account, Jid to, String id) {
228 MessagePacket packet = new MessagePacket();
229 packet.setFrom(account.getJid());
230 packet.setTo(to);
231 packet.addChild("received", "urn:xmpp:receipts").setAttribute("id", id);
232 packet.addChild("store", "urn:xmpp:hints");
233 return packet;
234 }
235
236 public MessagePacket sessionProposal(JingleConnectionManager.RtpSessionProposal proposal) {
237 final MessagePacket packet = new MessagePacket();
238 packet.setTo(proposal.with);
239 final Element propose = packet.addChild("propose", Namespace.JINGLE_MESSAGE);
240 propose.setAttribute("id", proposal.sessionId);
241 propose.addChild("description", Namespace.JINGLE_APPS_RTP);
242 return packet;
243 }
244}