1package eu.siacs.conversations.generator;
2
3import android.util.Log;
4
5import java.text.SimpleDateFormat;
6import java.util.Date;
7import java.util.Locale;
8import java.util.TimeZone;
9
10import net.java.otr4j.OtrException;
11import net.java.otr4j.session.Session;
12
13import eu.siacs.conversations.Config;
14import eu.siacs.conversations.crypto.axolotl.AxolotlService;
15import eu.siacs.conversations.crypto.axolotl.NoSessionsCreatedException;
16import eu.siacs.conversations.crypto.axolotl.XmppAxolotlMessage;
17import eu.siacs.conversations.entities.Account;
18import eu.siacs.conversations.entities.Conversation;
19import eu.siacs.conversations.entities.Message;
20import eu.siacs.conversations.services.XmppConnectionService;
21import eu.siacs.conversations.xml.Element;
22import eu.siacs.conversations.xmpp.chatstate.ChatState;
23import eu.siacs.conversations.xmpp.jid.Jid;
24import eu.siacs.conversations.xmpp.stanzas.MessagePacket;
25
26public class MessageGenerator extends AbstractGenerator {
27 public MessageGenerator(XmppConnectionService service) {
28 super(service);
29 }
30
31 private MessagePacket preparePacket(Message message, boolean addDelay) {
32 Conversation conversation = message.getConversation();
33 Account account = conversation.getAccount();
34 MessagePacket packet = new MessagePacket();
35 if (conversation.getMode() == Conversation.MODE_SINGLE) {
36 packet.setTo(message.getCounterpart());
37 packet.setType(MessagePacket.TYPE_CHAT);
38 packet.addChild("markable", "urn:xmpp:chat-markers:0");
39 if (this.mXmppConnectionService.indicateReceived()) {
40 packet.addChild("request", "urn:xmpp:receipts");
41 }
42 } else if (message.getType() == Message.TYPE_PRIVATE) {
43 packet.setTo(message.getCounterpart());
44 packet.setType(MessagePacket.TYPE_CHAT);
45 if (this.mXmppConnectionService.indicateReceived()) {
46 packet.addChild("request", "urn:xmpp:receipts");
47 }
48 } else {
49 packet.setTo(message.getCounterpart().toBareJid());
50 packet.setType(MessagePacket.TYPE_GROUPCHAT);
51 }
52 packet.setFrom(account.getJid());
53 packet.setId(message.getUuid());
54 if (addDelay) {
55 addDelay(packet, message.getTimeSent());
56 }
57 return packet;
58 }
59
60 private void addDelay(MessagePacket packet, long timestamp) {
61 final SimpleDateFormat mDateFormat = new SimpleDateFormat(
62 "yyyy-MM-dd'T'HH:mm:ss.SSS'Z'", Locale.US);
63 mDateFormat.setTimeZone(TimeZone.getTimeZone("UTC"));
64 Element delay = packet.addChild("delay", "urn:xmpp:delay");
65 Date date = new Date(timestamp);
66 delay.setAttribute("stamp", mDateFormat.format(date));
67 }
68
69 public MessagePacket generateAxolotlChat(Message message) throws NoSessionsCreatedException{
70 return generateAxolotlChat(message, false);
71 }
72
73 public MessagePacket generateAxolotlChat(Message message, boolean addDelay) throws NoSessionsCreatedException{
74 MessagePacket packet = preparePacket(message, addDelay);
75 AxolotlService service = message.getConversation().getAccount().getAxolotlService();
76 Log.d(Config.LOGTAG, "Submitting message to axolotl service for send processing...");
77 XmppAxolotlMessage axolotlMessage = service.processSending(message.getContact(),
78 message.getBody());
79 packet.setAxolotlMessage(axolotlMessage.toXml());
80 return packet;
81 }
82
83 public MessagePacket generateOtrChat(Message message) {
84 return generateOtrChat(message, false);
85 }
86
87 public MessagePacket generateOtrChat(Message message, boolean addDelay) {
88 Session otrSession = message.getConversation().getOtrSession();
89 if (otrSession == null) {
90 return null;
91 }
92 MessagePacket packet = preparePacket(message, addDelay);
93 packet.addChild("private", "urn:xmpp:carbons:2");
94 packet.addChild("no-copy", "urn:xmpp:hints");
95 packet.addChild("no-permanent-store", "urn:xmpp:hints");
96 try {
97 String content;
98 if (message.hasFileOnRemoteHost()) {
99 content = message.getFileParams().url.toString();
100 } else {
101 content = message.getBody();
102 }
103 packet.setBody(otrSession.transformSending(content)[0]);
104 return packet;
105 } catch (OtrException e) {
106 return null;
107 }
108 }
109
110 public MessagePacket generateChat(Message message) {
111 return generateChat(message, false);
112 }
113
114 public MessagePacket generateChat(Message message, boolean addDelay) {
115 MessagePacket packet = preparePacket(message, addDelay);
116 if (message.hasFileOnRemoteHost()) {
117 packet.setBody(message.getFileParams().url.toString());
118 } else {
119 packet.setBody(message.getBody());
120 }
121 return packet;
122 }
123
124 public MessagePacket generatePgpChat(Message message) {
125 return generatePgpChat(message, false);
126 }
127
128 public MessagePacket generatePgpChat(Message message, boolean addDelay) {
129 MessagePacket packet = preparePacket(message, addDelay);
130 packet.setBody("This is an XEP-0027 encrypted message");
131 if (message.getEncryption() == Message.ENCRYPTION_DECRYPTED) {
132 packet.addChild("x", "jabber:x:encrypted").setContent(message.getEncryptedBody());
133 } else if (message.getEncryption() == Message.ENCRYPTION_PGP) {
134 packet.addChild("x", "jabber:x:encrypted").setContent(message.getBody());
135 }
136 return packet;
137 }
138
139 public MessagePacket generateChatState(Conversation conversation) {
140 final Account account = conversation.getAccount();
141 MessagePacket packet = new MessagePacket();
142 packet.setTo(conversation.getJid().toBareJid());
143 packet.setFrom(account.getJid());
144 packet.addChild(ChatState.toElement(conversation.getOutgoingChatState()));
145 return packet;
146 }
147
148 public MessagePacket confirm(final Account account, final Jid to, final String id) {
149 MessagePacket packet = new MessagePacket();
150 packet.setType(MessagePacket.TYPE_NORMAL);
151 packet.setTo(to);
152 packet.setFrom(account.getJid());
153 Element received = packet.addChild("displayed",
154 "urn:xmpp:chat-markers:0");
155 received.setAttribute("id", id);
156 return packet;
157 }
158
159 public MessagePacket conferenceSubject(Conversation conversation,
160 String subject) {
161 MessagePacket packet = new MessagePacket();
162 packet.setType(MessagePacket.TYPE_GROUPCHAT);
163 packet.setTo(conversation.getJid().toBareJid());
164 Element subjectChild = new Element("subject");
165 subjectChild.setContent(subject);
166 packet.addChild(subjectChild);
167 packet.setFrom(conversation.getAccount().getJid().toBareJid());
168 return packet;
169 }
170
171 public MessagePacket directInvite(final Conversation conversation, final Jid contact) {
172 MessagePacket packet = new MessagePacket();
173 packet.setType(MessagePacket.TYPE_NORMAL);
174 packet.setTo(contact);
175 packet.setFrom(conversation.getAccount().getJid());
176 Element x = packet.addChild("x", "jabber:x:conference");
177 x.setAttribute("jid", conversation.getJid().toBareJid().toString());
178 return packet;
179 }
180
181 public MessagePacket invite(Conversation conversation, Jid contact) {
182 MessagePacket packet = new MessagePacket();
183 packet.setTo(conversation.getJid().toBareJid());
184 packet.setFrom(conversation.getAccount().getJid());
185 Element x = new Element("x");
186 x.setAttribute("xmlns", "http://jabber.org/protocol/muc#user");
187 Element invite = new Element("invite");
188 invite.setAttribute("to", contact.toBareJid().toString());
189 x.addChild(invite);
190 packet.addChild(x);
191 return packet;
192 }
193
194 public MessagePacket received(Account account,
195 MessagePacket originalMessage, String namespace) {
196 MessagePacket receivedPacket = new MessagePacket();
197 receivedPacket.setType(MessagePacket.TYPE_NORMAL);
198 receivedPacket.setTo(originalMessage.getFrom());
199 receivedPacket.setFrom(account.getJid());
200 Element received = receivedPacket.addChild("received", namespace);
201 received.setAttribute("id", originalMessage.getId());
202 return receivedPacket;
203 }
204
205 public MessagePacket generateOtrError(Jid to, String id, String errorText) {
206 MessagePacket packet = new MessagePacket();
207 packet.setType(MessagePacket.TYPE_ERROR);
208 packet.setAttribute("id",id);
209 packet.setTo(to);
210 Element error = packet.addChild("error");
211 error.setAttribute("code","406");
212 error.setAttribute("type","modify");
213 error.addChild("not-acceptable","urn:ietf:params:xml:ns:xmpp-stanzas");
214 error.addChild("text").setContent("?OTR Error:" + errorText);
215 return packet;
216 }
217}