1package eu.siacs.conversations.generator;
2
3import android.util.Log;
4
5import net.java.otr4j.OtrException;
6import net.java.otr4j.session.Session;
7
8import java.text.SimpleDateFormat;
9import java.util.Date;
10import java.util.Locale;
11import java.util.TimeZone;
12
13import eu.siacs.conversations.Config;
14import eu.siacs.conversations.crypto.axolotl.AxolotlService;
15import eu.siacs.conversations.crypto.axolotl.XmppAxolotlMessage;
16import eu.siacs.conversations.entities.Account;
17import eu.siacs.conversations.entities.Conversation;
18import eu.siacs.conversations.entities.Message;
19import eu.siacs.conversations.services.XmppConnectionService;
20import eu.siacs.conversations.xml.Element;
21import eu.siacs.conversations.xmpp.chatstate.ChatState;
22import eu.siacs.conversations.xmpp.jid.Jid;
23import eu.siacs.conversations.xmpp.stanzas.MessagePacket;
24
25public class MessageGenerator extends AbstractGenerator {
26 public MessageGenerator(XmppConnectionService service) {
27 super(service);
28 }
29
30 private MessagePacket preparePacket(Message message) {
31 Conversation conversation = message.getConversation();
32 Account account = conversation.getAccount();
33 MessagePacket packet = new MessagePacket();
34 if (conversation.getMode() == Conversation.MODE_SINGLE) {
35 packet.setTo(message.getCounterpart());
36 packet.setType(MessagePacket.TYPE_CHAT);
37 packet.addChild("markable", "urn:xmpp:chat-markers:0");
38 if (this.mXmppConnectionService.indicateReceived()) {
39 packet.addChild("request", "urn:xmpp:receipts");
40 }
41 } else if (message.getType() == Message.TYPE_PRIVATE) {
42 packet.setTo(message.getCounterpart());
43 packet.setType(MessagePacket.TYPE_CHAT);
44 if (this.mXmppConnectionService.indicateReceived()) {
45 packet.addChild("request", "urn:xmpp:receipts");
46 }
47 } else {
48 packet.setTo(message.getCounterpart().toBareJid());
49 packet.setType(MessagePacket.TYPE_GROUPCHAT);
50 }
51 packet.setFrom(account.getJid());
52 packet.setId(message.getUuid());
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) {
66 MessagePacket packet = preparePacket(message);
67 AxolotlService service = message.getConversation().getAccount().getAxolotlService();
68 Log.d(Config.LOGTAG, AxolotlService.getLogprefix(message.getConversation().getAccount())+"Submitting message to axolotl service for send processing...");
69 XmppAxolotlMessage axolotlMessage = service.encrypt(message);
70 if (axolotlMessage == null) {
71 return null;
72 }
73 packet.setAxolotlMessage(axolotlMessage.toXml());
74 return packet;
75 }
76
77 public MessagePacket generateOtrChat(Message message) {
78 Session otrSession = message.getConversation().getOtrSession();
79 if (otrSession == null) {
80 return null;
81 }
82 MessagePacket packet = preparePacket(message);
83 packet.addChild("private", "urn:xmpp:carbons:2");
84 packet.addChild("no-copy", "urn:xmpp:hints");
85 packet.addChild("no-permanent-store", "urn:xmpp:hints");
86 try {
87 String content;
88 if (message.hasFileOnRemoteHost()) {
89 content = message.getFileParams().url.toString();
90 } else {
91 content = message.getBody();
92 }
93 packet.setBody(otrSession.transformSending(content)[0]);
94 return packet;
95 } catch (OtrException e) {
96 return null;
97 }
98 }
99
100 public MessagePacket generateChat(Message message) {
101 MessagePacket packet = preparePacket(message);
102 if (message.hasFileOnRemoteHost()) {
103 packet.setBody(message.getFileParams().url.toString());
104 } else {
105 packet.setBody(message.getBody());
106 }
107 return packet;
108 }
109
110 public MessagePacket generatePgpChat(Message message) {
111 MessagePacket packet = preparePacket(message);
112 packet.setBody("This is an XEP-0027 encrypted message");
113 if (message.getEncryption() == Message.ENCRYPTION_DECRYPTED) {
114 packet.addChild("x", "jabber:x:encrypted").setContent(message.getEncryptedBody());
115 } else if (message.getEncryption() == Message.ENCRYPTION_PGP) {
116 packet.addChild("x", "jabber:x:encrypted").setContent(message.getBody());
117 }
118 return packet;
119 }
120
121 public MessagePacket generateChatState(Conversation conversation) {
122 final Account account = conversation.getAccount();
123 MessagePacket packet = new MessagePacket();
124 packet.setTo(conversation.getJid().toBareJid());
125 packet.setFrom(account.getJid());
126 packet.addChild(ChatState.toElement(conversation.getOutgoingChatState()));
127 return packet;
128 }
129
130 public MessagePacket confirm(final Account account, final Jid to, final String id) {
131 MessagePacket packet = new MessagePacket();
132 packet.setType(MessagePacket.TYPE_NORMAL);
133 packet.setTo(to);
134 packet.setFrom(account.getJid());
135 Element received = packet.addChild("displayed","urn:xmpp:chat-markers:0");
136 received.setAttribute("id", id);
137 return packet;
138 }
139
140 public MessagePacket conferenceSubject(Conversation conversation,
141 String subject) {
142 MessagePacket packet = new MessagePacket();
143 packet.setType(MessagePacket.TYPE_GROUPCHAT);
144 packet.setTo(conversation.getJid().toBareJid());
145 Element subjectChild = new Element("subject");
146 subjectChild.setContent(subject);
147 packet.addChild(subjectChild);
148 packet.setFrom(conversation.getAccount().getJid().toBareJid());
149 return packet;
150 }
151
152 public MessagePacket directInvite(final Conversation conversation, final Jid contact) {
153 MessagePacket packet = new MessagePacket();
154 packet.setType(MessagePacket.TYPE_NORMAL);
155 packet.setTo(contact);
156 packet.setFrom(conversation.getAccount().getJid());
157 Element x = packet.addChild("x", "jabber:x:conference");
158 x.setAttribute("jid", conversation.getJid().toBareJid().toString());
159 return packet;
160 }
161
162 public MessagePacket invite(Conversation conversation, Jid contact) {
163 MessagePacket packet = new MessagePacket();
164 packet.setTo(conversation.getJid().toBareJid());
165 packet.setFrom(conversation.getAccount().getJid());
166 Element x = new Element("x");
167 x.setAttribute("xmlns", "http://jabber.org/protocol/muc#user");
168 Element invite = new Element("invite");
169 invite.setAttribute("to", contact.toBareJid().toString());
170 x.addChild(invite);
171 packet.addChild(x);
172 return packet;
173 }
174
175 public MessagePacket received(Account account,
176 MessagePacket originalMessage, String namespace) {
177 MessagePacket receivedPacket = new MessagePacket();
178 receivedPacket.setType(MessagePacket.TYPE_NORMAL);
179 receivedPacket.setTo(originalMessage.getFrom());
180 receivedPacket.setFrom(account.getJid());
181 Element received = receivedPacket.addChild("received", namespace);
182 received.setAttribute("id", originalMessage.getId());
183 return receivedPacket;
184 }
185
186 public MessagePacket generateOtrError(Jid to, String id, String errorText) {
187 MessagePacket packet = new MessagePacket();
188 packet.setType(MessagePacket.TYPE_ERROR);
189 packet.setAttribute("id",id);
190 packet.setTo(to);
191 Element error = packet.addChild("error");
192 error.setAttribute("code","406");
193 error.setAttribute("type","modify");
194 error.addChild("not-acceptable","urn:ietf:params:xml:ns:xmpp-stanzas");
195 error.addChild("text").setContent("?OTR Error:" + errorText);
196 return packet;
197 }
198}