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