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