1package eu.siacs.conversations.generator;
2
3import android.util.Log;
4
5import net.java.otr4j.OtrException;
6import net.java.otr4j.session.Session;
7
8import java.text.SimpleDateFormat;
9import java.util.Date;
10import java.util.Locale;
11import java.util.TimeZone;
12
13import eu.siacs.conversations.Config;
14import eu.siacs.conversations.crypto.axolotl.AxolotlService;
15import eu.siacs.conversations.crypto.axolotl.XmppAxolotlMessage;
16import eu.siacs.conversations.entities.Account;
17import eu.siacs.conversations.entities.Conversation;
18import eu.siacs.conversations.entities.Message;
19import eu.siacs.conversations.services.XmppConnectionService;
20import eu.siacs.conversations.xml.Element;
21import eu.siacs.conversations.xmpp.chatstate.ChatState;
22import eu.siacs.conversations.xmpp.jid.Jid;
23import eu.siacs.conversations.xmpp.stanzas.MessagePacket;
24
25public class MessageGenerator extends AbstractGenerator {
26 public MessageGenerator(XmppConnectionService service) {
27 super(service);
28 }
29
30 private MessagePacket preparePacket(Message message, boolean addDelay) {
31 Conversation conversation = message.getConversation();
32 Account account = conversation.getAccount();
33 MessagePacket packet = new MessagePacket();
34 if (conversation.getMode() == Conversation.MODE_SINGLE) {
35 packet.setTo(message.getCounterpart());
36 packet.setType(MessagePacket.TYPE_CHAT);
37 packet.addChild("markable", "urn:xmpp:chat-markers:0");
38 if (this.mXmppConnectionService.indicateReceived()) {
39 packet.addChild("request", "urn:xmpp:receipts");
40 }
41 } else if (message.getType() == Message.TYPE_PRIVATE) {
42 packet.setTo(message.getCounterpart());
43 packet.setType(MessagePacket.TYPE_CHAT);
44 if (this.mXmppConnectionService.indicateReceived()) {
45 packet.addChild("request", "urn:xmpp:receipts");
46 }
47 } else {
48 packet.setTo(message.getCounterpart().toBareJid());
49 packet.setType(MessagePacket.TYPE_GROUPCHAT);
50 }
51 packet.setFrom(account.getJid());
52 packet.setId(message.getUuid());
53 if (addDelay) {
54 addDelay(packet, message.getTimeSent());
55 }
56 return packet;
57 }
58
59 private void addDelay(MessagePacket packet, long timestamp) {
60 final SimpleDateFormat mDateFormat = new SimpleDateFormat(
61 "yyyy-MM-dd'T'HH:mm:ss.SSS'Z'", Locale.US);
62 mDateFormat.setTimeZone(TimeZone.getTimeZone("UTC"));
63 Element delay = packet.addChild("delay", "urn:xmpp:delay");
64 Date date = new Date(timestamp);
65 delay.setAttribute("stamp", mDateFormat.format(date));
66 }
67
68 public MessagePacket generateAxolotlChat(Message message) {
69 return generateAxolotlChat(message, false);
70 }
71
72 public MessagePacket generateAxolotlChat(Message message, boolean addDelay) {
73 MessagePacket packet = preparePacket(message, addDelay);
74 AxolotlService service = message.getConversation().getAccount().getAxolotlService();
75 Log.d(Config.LOGTAG, AxolotlService.getLogprefix(message.getConversation().getAccount())+"Submitting message to axolotl service for send processing...");
76 XmppAxolotlMessage axolotlMessage = service.encrypt(message);
77 if (axolotlMessage == null) {
78 return null;
79 }
80 packet.setAxolotlMessage(axolotlMessage.toXml());
81 return packet;
82 }
83
84 public MessagePacket generateOtrChat(Message message) {
85 return generateOtrChat(message, false);
86 }
87
88 public MessagePacket generateOtrChat(Message message, boolean addDelay) {
89 Session otrSession = message.getConversation().getOtrSession();
90 if (otrSession == null) {
91 return null;
92 }
93 MessagePacket packet = preparePacket(message, addDelay);
94 packet.addChild("private", "urn:xmpp:carbons:2");
95 packet.addChild("no-copy", "urn:xmpp:hints");
96 packet.addChild("no-permanent-store", "urn:xmpp:hints");
97 try {
98 String content;
99 if (message.hasFileOnRemoteHost()) {
100 content = message.getFileParams().url.toString();
101 } else {
102 content = message.getBody();
103 }
104 packet.setBody(otrSession.transformSending(content)[0]);
105 return packet;
106 } catch (OtrException e) {
107 return null;
108 }
109 }
110
111 public MessagePacket generateChat(Message message) {
112 return generateChat(message, false);
113 }
114
115 public MessagePacket generateChat(Message message, boolean addDelay) {
116 MessagePacket packet = preparePacket(message, addDelay);
117 if (message.hasFileOnRemoteHost()) {
118 packet.setBody(message.getFileParams().url.toString());
119 } else {
120 packet.setBody(message.getBody());
121 }
122 return packet;
123 }
124
125 public MessagePacket generatePgpChat(Message message) {
126 return generatePgpChat(message, false);
127 }
128
129 public MessagePacket generatePgpChat(Message message, boolean addDelay) {
130 MessagePacket packet = preparePacket(message, addDelay);
131 packet.setBody("This is an XEP-0027 encrypted message");
132 if (message.getEncryption() == Message.ENCRYPTION_DECRYPTED) {
133 packet.addChild("x", "jabber:x:encrypted").setContent(message.getEncryptedBody());
134 } else if (message.getEncryption() == Message.ENCRYPTION_PGP) {
135 packet.addChild("x", "jabber:x:encrypted").setContent(message.getBody());
136 }
137 return packet;
138 }
139
140 public MessagePacket generateChatState(Conversation conversation) {
141 final Account account = conversation.getAccount();
142 MessagePacket packet = new MessagePacket();
143 packet.setTo(conversation.getJid().toBareJid());
144 packet.setFrom(account.getJid());
145 packet.addChild(ChatState.toElement(conversation.getOutgoingChatState()));
146 return packet;
147 }
148
149 public MessagePacket confirm(final Account account, final Jid to, final String id) {
150 MessagePacket packet = new MessagePacket();
151 packet.setType(MessagePacket.TYPE_NORMAL);
152 packet.setTo(to);
153 packet.setFrom(account.getJid());
154 Element received = packet.addChild("displayed",
155 "urn:xmpp:chat-markers:0");
156 received.setAttribute("id", id);
157 return packet;
158 }
159
160 public MessagePacket conferenceSubject(Conversation conversation,
161 String subject) {
162 MessagePacket packet = new MessagePacket();
163 packet.setType(MessagePacket.TYPE_GROUPCHAT);
164 packet.setTo(conversation.getJid().toBareJid());
165 Element subjectChild = new Element("subject");
166 subjectChild.setContent(subject);
167 packet.addChild(subjectChild);
168 packet.setFrom(conversation.getAccount().getJid().toBareJid());
169 return packet;
170 }
171
172 public MessagePacket directInvite(final Conversation conversation, final Jid contact) {
173 MessagePacket packet = new MessagePacket();
174 packet.setType(MessagePacket.TYPE_NORMAL);
175 packet.setTo(contact);
176 packet.setFrom(conversation.getAccount().getJid());
177 Element x = packet.addChild("x", "jabber:x:conference");
178 x.setAttribute("jid", conversation.getJid().toBareJid().toString());
179 return packet;
180 }
181
182 public MessagePacket invite(Conversation conversation, Jid contact) {
183 MessagePacket packet = new MessagePacket();
184 packet.setTo(conversation.getJid().toBareJid());
185 packet.setFrom(conversation.getAccount().getJid());
186 Element x = new Element("x");
187 x.setAttribute("xmlns", "http://jabber.org/protocol/muc#user");
188 Element invite = new Element("invite");
189 invite.setAttribute("to", contact.toBareJid().toString());
190 x.addChild(invite);
191 packet.addChild(x);
192 return packet;
193 }
194
195 public MessagePacket received(Account account,
196 MessagePacket originalMessage, String namespace) {
197 MessagePacket receivedPacket = new MessagePacket();
198 receivedPacket.setType(MessagePacket.TYPE_NORMAL);
199 receivedPacket.setTo(originalMessage.getFrom());
200 receivedPacket.setFrom(account.getJid());
201 Element received = receivedPacket.addChild("received", namespace);
202 received.setAttribute("id", originalMessage.getId());
203 return receivedPacket;
204 }
205
206 public MessagePacket generateOtrError(Jid to, String id, String errorText) {
207 MessagePacket packet = new MessagePacket();
208 packet.setType(MessagePacket.TYPE_ERROR);
209 packet.setAttribute("id",id);
210 packet.setTo(to);
211 Element error = packet.addChild("error");
212 error.setAttribute("code","406");
213 error.setAttribute("type","modify");
214 error.addChild("not-acceptable","urn:ietf:params:xml:ns:xmpp-stanzas");
215 error.addChild("text").setContent("?OTR Error:" + errorText);
216 return packet;
217 }
218}