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 try {
75 packet.setBody(otrSession.transformSending(message.getBody())[0]);
76 return packet;
77 } catch (OtrException e) {
78 return null;
79 }
80 }
81
82 public MessagePacket generateChat(Message message) {
83 return generateChat(message, false);
84 }
85
86 public MessagePacket generateChat(Message message, boolean addDelay) {
87 MessagePacket packet = preparePacket(message, addDelay);
88 packet.setBody(message.getBody());
89 return packet;
90 }
91
92 public MessagePacket generatePgpChat(Message message) {
93 return generatePgpChat(message, false);
94 }
95
96 public MessagePacket generatePgpChat(Message message, boolean addDelay) {
97 MessagePacket packet = preparePacket(message, addDelay);
98 packet.setBody("This is an XEP-0027 encryted message");
99 if (message.getEncryption() == Message.ENCRYPTION_DECRYPTED) {
100 packet.addChild("x", "jabber:x:encrypted").setContent(
101 message.getEncryptedBody());
102 } else if (message.getEncryption() == Message.ENCRYPTION_PGP) {
103 packet.addChild("x", "jabber:x:encrypted").setContent(
104 message.getBody());
105 }
106 return packet;
107 }
108
109 public MessagePacket generateChatState(Conversation conversation) {
110 final Account account = conversation.getAccount();
111 MessagePacket packet = new MessagePacket();
112 packet.setTo(conversation.getJid().toBareJid());
113 packet.setFrom(account.getJid());
114 packet.addChild(ChatState.toElement(conversation.getOutgoingChatState()));
115 return packet;
116 }
117
118 public MessagePacket confirm(final Account account, final Jid to, final String id) {
119 MessagePacket packet = new MessagePacket();
120 packet.setType(MessagePacket.TYPE_NORMAL);
121 packet.setTo(to);
122 packet.setFrom(account.getJid());
123 Element received = packet.addChild("displayed",
124 "urn:xmpp:chat-markers:0");
125 received.setAttribute("id", id);
126 return packet;
127 }
128
129 public MessagePacket conferenceSubject(Conversation conversation,
130 String subject) {
131 MessagePacket packet = new MessagePacket();
132 packet.setType(MessagePacket.TYPE_GROUPCHAT);
133 packet.setTo(conversation.getJid().toBareJid());
134 Element subjectChild = new Element("subject");
135 subjectChild.setContent(subject);
136 packet.addChild(subjectChild);
137 packet.setFrom(conversation.getAccount().getJid().toBareJid());
138 return packet;
139 }
140
141 public MessagePacket directInvite(final Conversation conversation, final Jid contact) {
142 MessagePacket packet = new MessagePacket();
143 packet.setType(MessagePacket.TYPE_NORMAL);
144 packet.setTo(contact);
145 packet.setFrom(conversation.getAccount().getJid());
146 Element x = packet.addChild("x", "jabber:x:conference");
147 x.setAttribute("jid", conversation.getJid().toBareJid().toString());
148 return packet;
149 }
150
151 public MessagePacket invite(Conversation conversation, Jid contact) {
152 MessagePacket packet = new MessagePacket();
153 packet.setTo(conversation.getJid().toBareJid());
154 packet.setFrom(conversation.getAccount().getJid());
155 Element x = new Element("x");
156 x.setAttribute("xmlns", "http://jabber.org/protocol/muc#user");
157 Element invite = new Element("invite");
158 invite.setAttribute("to", contact.toBareJid().toString());
159 x.addChild(invite);
160 packet.addChild(x);
161 return packet;
162 }
163
164 public MessagePacket received(Account account,
165 MessagePacket originalMessage, String namespace) {
166 MessagePacket receivedPacket = new MessagePacket();
167 receivedPacket.setType(MessagePacket.TYPE_NORMAL);
168 receivedPacket.setTo(originalMessage.getFrom());
169 receivedPacket.setFrom(account.getJid());
170 Element received = receivedPacket.addChild("received", namespace);
171 received.setAttribute("id", originalMessage.getId());
172 return receivedPacket;
173 }
174}