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) {
70 return generateAxolotlChat(message, false);
71 }
72
73 public MessagePacket generateAxolotlChat(Message message, boolean addDelay) {
74 MessagePacket packet = preparePacket(message, addDelay);
75 AxolotlService service = message.getConversation().getAccount().getAxolotlService();
76 Log.d(Config.LOGTAG, AxolotlService.getLogprefix(message.getConversation().getAccount())+"Submitting message to axolotl service for send processing...");
77 XmppAxolotlMessage axolotlMessage = service.encrypt(message);
78 if (axolotlMessage == null) {
79 return null;
80 }
81 packet.setAxolotlMessage(axolotlMessage.toXml());
82 return packet;
83 }
84
85 public MessagePacket generateOtrChat(Message message) {
86 return generateOtrChat(message, false);
87 }
88
89 public MessagePacket generateOtrChat(Message message, boolean addDelay) {
90 Session otrSession = message.getConversation().getOtrSession();
91 if (otrSession == null) {
92 return null;
93 }
94 MessagePacket packet = preparePacket(message, addDelay);
95 packet.addChild("private", "urn:xmpp:carbons:2");
96 packet.addChild("no-copy", "urn:xmpp:hints");
97 packet.addChild("no-permanent-store", "urn:xmpp:hints");
98 try {
99 String content;
100 if (message.hasFileOnRemoteHost()) {
101 content = message.getFileParams().url.toString();
102 } else {
103 content = message.getBody();
104 }
105 packet.setBody(otrSession.transformSending(content)[0]);
106 return packet;
107 } catch (OtrException e) {
108 return null;
109 }
110 }
111
112 public MessagePacket generateChat(Message message) {
113 return generateChat(message, false);
114 }
115
116 public MessagePacket generateChat(Message message, boolean addDelay) {
117 MessagePacket packet = preparePacket(message, addDelay);
118 if (message.hasFileOnRemoteHost()) {
119 packet.setBody(message.getFileParams().url.toString());
120 } else {
121 packet.setBody(message.getBody());
122 }
123 return packet;
124 }
125
126 public MessagePacket generatePgpChat(Message message) {
127 return generatePgpChat(message, false);
128 }
129
130 public MessagePacket generatePgpChat(Message message, boolean addDelay) {
131 MessagePacket packet = preparePacket(message, addDelay);
132 packet.setBody("This is an XEP-0027 encrypted message");
133 if (message.getEncryption() == Message.ENCRYPTION_DECRYPTED) {
134 packet.addChild("x", "jabber:x:encrypted").setContent(message.getEncryptedBody());
135 } else if (message.getEncryption() == Message.ENCRYPTION_PGP) {
136 packet.addChild("x", "jabber:x:encrypted").setContent(message.getBody());
137 }
138 return packet;
139 }
140
141 public MessagePacket generateChatState(Conversation conversation) {
142 final Account account = conversation.getAccount();
143 MessagePacket packet = new MessagePacket();
144 packet.setTo(conversation.getJid().toBareJid());
145 packet.setFrom(account.getJid());
146 packet.addChild(ChatState.toElement(conversation.getOutgoingChatState()));
147 return packet;
148 }
149
150 public MessagePacket confirm(final Account account, final Jid to, final String id) {
151 MessagePacket packet = new MessagePacket();
152 packet.setType(MessagePacket.TYPE_NORMAL);
153 packet.setTo(to);
154 packet.setFrom(account.getJid());
155 Element received = packet.addChild("displayed",
156 "urn:xmpp:chat-markers:0");
157 received.setAttribute("id", id);
158 return packet;
159 }
160
161 public MessagePacket conferenceSubject(Conversation conversation,
162 String subject) {
163 MessagePacket packet = new MessagePacket();
164 packet.setType(MessagePacket.TYPE_GROUPCHAT);
165 packet.setTo(conversation.getJid().toBareJid());
166 Element subjectChild = new Element("subject");
167 subjectChild.setContent(subject);
168 packet.addChild(subjectChild);
169 packet.setFrom(conversation.getAccount().getJid().toBareJid());
170 return packet;
171 }
172
173 public MessagePacket directInvite(final Conversation conversation, final Jid contact) {
174 MessagePacket packet = new MessagePacket();
175 packet.setType(MessagePacket.TYPE_NORMAL);
176 packet.setTo(contact);
177 packet.setFrom(conversation.getAccount().getJid());
178 Element x = packet.addChild("x", "jabber:x:conference");
179 x.setAttribute("jid", conversation.getJid().toBareJid().toString());
180 return packet;
181 }
182
183 public MessagePacket invite(Conversation conversation, Jid contact) {
184 MessagePacket packet = new MessagePacket();
185 packet.setTo(conversation.getJid().toBareJid());
186 packet.setFrom(conversation.getAccount().getJid());
187 Element x = new Element("x");
188 x.setAttribute("xmlns", "http://jabber.org/protocol/muc#user");
189 Element invite = new Element("invite");
190 invite.setAttribute("to", contact.toBareJid().toString());
191 x.addChild(invite);
192 packet.addChild(x);
193 return packet;
194 }
195
196 public MessagePacket received(Account account,
197 MessagePacket originalMessage, String namespace) {
198 MessagePacket receivedPacket = new MessagePacket();
199 receivedPacket.setType(MessagePacket.TYPE_NORMAL);
200 receivedPacket.setTo(originalMessage.getFrom());
201 receivedPacket.setFrom(account.getJid());
202 Element received = receivedPacket.addChild("received", namespace);
203 received.setAttribute("id", originalMessage.getId());
204 return receivedPacket;
205 }
206
207 public MessagePacket generateOtrError(Jid to, String id, String errorText) {
208 MessagePacket packet = new MessagePacket();
209 packet.setType(MessagePacket.TYPE_ERROR);
210 packet.setAttribute("id",id);
211 packet.setTo(to);
212 Element error = packet.addChild("error");
213 error.setAttribute("code","406");
214 error.setAttribute("type","modify");
215 error.addChild("not-acceptable","urn:ietf:params:xml:ns:xmpp-stanzas");
216 error.addChild("text").setContent("?OTR Error:" + errorText);
217 return packet;
218 }
219}