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.toElement());
67 packet.addChild("pretty-please-store","urn:xmpp:hints");
68 return packet;
69 }
70
71 public MessagePacket generateOtrChat(Message message) {
72 Session otrSession = message.getConversation().getOtrSession();
73 if (otrSession == null) {
74 return null;
75 }
76 MessagePacket packet = preparePacket(message);
77 packet.addChild("private", "urn:xmpp:carbons:2");
78 packet.addChild("no-copy", "urn:xmpp:hints");
79 packet.addChild("no-permanent-store", "urn:xmpp:hints");
80 packet.addChild("no-permanent-storage", "urn:xmpp:hints");
81 try {
82 String content;
83 if (message.hasFileOnRemoteHost()) {
84 content = message.getFileParams().url.toString();
85 } else {
86 content = message.getBody();
87 }
88 packet.setBody(otrSession.transformSending(content)[0]);
89 return packet;
90 } catch (OtrException e) {
91 return null;
92 }
93 }
94
95 public MessagePacket generateChat(Message message) {
96 MessagePacket packet = preparePacket(message);
97 if (message.hasFileOnRemoteHost()) {
98 packet.setBody(message.getFileParams().url.toString());
99 } else {
100 packet.setBody(message.getBody());
101 }
102 return packet;
103 }
104
105 public MessagePacket generatePgpChat(Message message) {
106 MessagePacket packet = preparePacket(message);
107 packet.setBody("This is an XEP-0027 encrypted message");
108 if (message.getEncryption() == Message.ENCRYPTION_DECRYPTED) {
109 packet.addChild("x", "jabber:x:encrypted").setContent(message.getEncryptedBody());
110 } else if (message.getEncryption() == Message.ENCRYPTION_PGP) {
111 packet.addChild("x", "jabber:x:encrypted").setContent(message.getBody());
112 }
113 return packet;
114 }
115
116 public MessagePacket generateChatState(Conversation conversation) {
117 final Account account = conversation.getAccount();
118 MessagePacket packet = new MessagePacket();
119 packet.setType(MessagePacket.TYPE_CHAT);
120 packet.setTo(conversation.getJid().toBareJid());
121 packet.setFrom(account.getJid());
122 packet.addChild(ChatState.toElement(conversation.getOutgoingChatState()));
123 packet.addChild("no-store", "urn:xmpp:hints");
124 packet.addChild("no-storage", "urn:xmpp:hints"); //wrong! don't copy this. Its *store*
125 return packet;
126 }
127
128 public MessagePacket confirm(final Account account, final Jid to, final String id) {
129 MessagePacket packet = new MessagePacket();
130 packet.setType(MessagePacket.TYPE_CHAT);
131 packet.setTo(to);
132 packet.setFrom(account.getJid());
133 Element received = packet.addChild("displayed","urn:xmpp:chat-markers:0");
134 received.setAttribute("id", id);
135 return packet;
136 }
137
138 public MessagePacket conferenceSubject(Conversation conversation,String subject) {
139 MessagePacket packet = new MessagePacket();
140 packet.setType(MessagePacket.TYPE_GROUPCHAT);
141 packet.setTo(conversation.getJid().toBareJid());
142 Element subjectChild = new Element("subject");
143 subjectChild.setContent(subject);
144 packet.addChild(subjectChild);
145 packet.setFrom(conversation.getAccount().getJid().toBareJid());
146 return packet;
147 }
148
149 public MessagePacket directInvite(final Conversation conversation, final Jid contact) {
150 MessagePacket packet = new MessagePacket();
151 packet.setType(MessagePacket.TYPE_NORMAL);
152 packet.setTo(contact);
153 packet.setFrom(conversation.getAccount().getJid());
154 Element x = packet.addChild("x", "jabber:x:conference");
155 x.setAttribute("jid", conversation.getJid().toBareJid().toString());
156 return packet;
157 }
158
159 public MessagePacket invite(Conversation conversation, Jid contact) {
160 MessagePacket packet = new MessagePacket();
161 packet.setTo(conversation.getJid().toBareJid());
162 packet.setFrom(conversation.getAccount().getJid());
163 Element x = new Element("x");
164 x.setAttribute("xmlns", "http://jabber.org/protocol/muc#user");
165 Element invite = new Element("invite");
166 invite.setAttribute("to", contact.toBareJid().toString());
167 x.addChild(invite);
168 packet.addChild(x);
169 return packet;
170 }
171
172 public MessagePacket received(Account account, MessagePacket originalMessage, String namespace, int type) {
173 MessagePacket receivedPacket = new MessagePacket();
174 receivedPacket.setType(type);
175 receivedPacket.setTo(originalMessage.getFrom());
176 receivedPacket.setFrom(account.getJid());
177 Element received = receivedPacket.addChild("received", namespace);
178 received.setAttribute("id", originalMessage.getId());
179 return receivedPacket;
180 }
181
182 public MessagePacket generateOtrError(Jid to, String id, String errorText) {
183 MessagePacket packet = new MessagePacket();
184 packet.setType(MessagePacket.TYPE_ERROR);
185 packet.setAttribute("id",id);
186 packet.setTo(to);
187 Element error = packet.addChild("error");
188 error.setAttribute("code","406");
189 error.setAttribute("type","modify");
190 error.addChild("not-acceptable","urn:ietf:params:xml:ns:xmpp-stanzas");
191 error.addChild("text").setContent("?OTR Error:" + errorText);
192 return packet;
193 }
194}