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