1package eu.siacs.conversations.generator;
2
3import java.text.SimpleDateFormat;
4import java.util.ArrayList;
5import java.util.Date;
6import java.util.Locale;
7import java.util.TimeZone;
8
9import eu.siacs.conversations.Config;
10import eu.siacs.conversations.crypto.axolotl.AxolotlService;
11import eu.siacs.conversations.crypto.axolotl.XmppAxolotlMessage;
12import eu.siacs.conversations.entities.Account;
13import eu.siacs.conversations.entities.Contact;
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.xml.Namespace;
19import eu.siacs.conversations.xmpp.chatstate.ChatState;
20import eu.siacs.conversations.xmpp.stanzas.MessagePacket;
21import rocks.xmpp.addr.Jid;
22
23public class MessageGenerator extends AbstractGenerator {
24 private static final String OMEMO_FALLBACK_MESSAGE = "I sent you an OMEMO encrypted message but your client doesn’t seem to support that. Find more information on https://conversations.im/omemo";
25 private static final String PGP_FALLBACK_MESSAGE = "I sent you a PGP encrypted message but your client doesn’t seem to support that.";
26
27 public MessageGenerator(XmppConnectionService service) {
28 super(service);
29 }
30
31 private MessagePacket preparePacket(Message message) {
32 Conversation conversation = (Conversation) message.getConversation();
33 Account account = conversation.getAccount();
34 MessagePacket packet = new MessagePacket();
35 final boolean isWithSelf = conversation.getContact().isSelf();
36 if (conversation.getMode() == Conversation.MODE_SINGLE) {
37 packet.setTo(message.getCounterpart());
38 packet.setType(MessagePacket.TYPE_CHAT);
39 if (this.mXmppConnectionService.indicateReceived() && !isWithSelf) {
40 packet.addChild("request", "urn:xmpp:receipts");
41 }
42 } else if (message.getType() == Message.TYPE_PRIVATE) { //TODO files and images might be private as well
43 packet.setTo(message.getCounterpart());
44 packet.setType(MessagePacket.TYPE_CHAT);
45 packet.addChild("x","http://jabber.org/protocol/muc#user");
46 if (this.mXmppConnectionService.indicateReceived()) {
47 packet.addChild("request", "urn:xmpp:receipts");
48 }
49 } else {
50 packet.setTo(message.getCounterpart().asBareJid());
51 packet.setType(MessagePacket.TYPE_GROUPCHAT);
52 }
53 if (conversation.isSingleOrPrivateAndNonAnonymous() && message.getType() != Message.TYPE_PRIVATE) {
54 packet.addChild("markable", "urn:xmpp:chat-markers:0");
55 }
56 packet.setFrom(account.getJid());
57 packet.setId(message.getUuid());
58 packet.addChild("origin-id", Namespace.STANZA_IDS).setAttribute("id",message.getUuid());
59 if (message.edited()) {
60 packet.addChild("replace","urn:xmpp:message-correct:0").setAttribute("id",message.getEditedId());
61 }
62 return packet;
63 }
64
65 public void addDelay(MessagePacket packet, long timestamp) {
66 final SimpleDateFormat mDateFormat = new SimpleDateFormat(
67 "yyyy-MM-dd'T'HH:mm:ss.SSS'Z'", Locale.US);
68 mDateFormat.setTimeZone(TimeZone.getTimeZone("UTC"));
69 Element delay = packet.addChild("delay", "urn:xmpp:delay");
70 Date date = new Date(timestamp);
71 delay.setAttribute("stamp", mDateFormat.format(date));
72 }
73
74 public MessagePacket generateAxolotlChat(Message message, XmppAxolotlMessage axolotlMessage) {
75 MessagePacket packet = preparePacket(message);
76 if (axolotlMessage == null) {
77 return null;
78 }
79 packet.setAxolotlMessage(axolotlMessage.toElement());
80 packet.setBody(OMEMO_FALLBACK_MESSAGE);
81 packet.addChild("store", "urn:xmpp:hints");
82 packet.addChild("encryption","urn:xmpp:eme:0")
83 .setAttribute("name","OMEMO")
84 .setAttribute("namespace",AxolotlService.PEP_PREFIX);
85 return packet;
86 }
87
88 public MessagePacket generateKeyTransportMessage(Jid to, XmppAxolotlMessage axolotlMessage) {
89 MessagePacket packet = new MessagePacket();
90 packet.setType(MessagePacket.TYPE_CHAT);
91 packet.setTo(to);
92 packet.setAxolotlMessage(axolotlMessage.toElement());
93 packet.addChild("store", "urn:xmpp:hints");
94 return packet;
95 }
96
97 public MessagePacket generateChat(Message message) {
98 MessagePacket packet = preparePacket(message);
99 String content;
100 if (message.hasFileOnRemoteHost()) {
101 Message.FileParams fileParams = message.getFileParams();
102 content = fileParams.url.toString();
103 packet.addChild("x",Namespace.OOB).addChild("url").setContent(content);
104 } else {
105 content = message.getBody();
106 }
107 packet.setBody(content);
108 return packet;
109 }
110
111 public MessagePacket generatePgpChat(Message message) {
112 MessagePacket packet = preparePacket(message);
113 if (message.hasFileOnRemoteHost()) {
114 final String url = message.getFileParams().url.toString();
115 packet.setBody(url);
116 packet.addChild("x",Namespace.OOB).addChild("url").setContent(url);
117 } else {
118 if (Config.supportUnencrypted()) {
119 packet.setBody(PGP_FALLBACK_MESSAGE);
120 }
121 if (message.getEncryption() == Message.ENCRYPTION_DECRYPTED) {
122 packet.addChild("x", "jabber:x:encrypted").setContent(message.getEncryptedBody());
123 } else if (message.getEncryption() == Message.ENCRYPTION_PGP) {
124 packet.addChild("x", "jabber:x:encrypted").setContent(message.getBody());
125 }
126 packet.addChild("encryption", "urn:xmpp:eme:0")
127 .setAttribute("namespace", "jabber:x:encrypted");
128 }
129 return packet;
130 }
131
132 public MessagePacket generateChatState(Conversation conversation) {
133 final Account account = conversation.getAccount();
134 MessagePacket packet = new MessagePacket();
135 packet.setType(conversation.getMode() == Conversation.MODE_MULTI ? MessagePacket.TYPE_GROUPCHAT : MessagePacket.TYPE_CHAT);
136 packet.setTo(conversation.getJid().asBareJid());
137 packet.setFrom(account.getJid());
138 packet.addChild(ChatState.toElement(conversation.getOutgoingChatState()));
139 packet.addChild("no-store", "urn:xmpp:hints");
140 packet.addChild("no-storage", "urn:xmpp:hints"); //wrong! don't copy this. Its *store*
141 return packet;
142 }
143
144 public MessagePacket confirm(final Account account, final Jid to, final String id, final Jid counterpart, final boolean groupChat) {
145 MessagePacket packet = new MessagePacket();
146 packet.setType(groupChat ? MessagePacket.TYPE_GROUPCHAT : MessagePacket.TYPE_CHAT);
147 packet.setTo(groupChat ? to.asBareJid() : to);
148 packet.setFrom(account.getJid());
149 Element displayed = packet.addChild("displayed","urn:xmpp:chat-markers:0");
150 displayed.setAttribute("id", id);
151 if (groupChat && counterpart != null) {
152 displayed.setAttribute("sender",counterpart.toString());
153 }
154 packet.addChild("store", "urn:xmpp:hints");
155 return packet;
156 }
157
158 public MessagePacket conferenceSubject(Conversation conversation,String subject) {
159 MessagePacket packet = new MessagePacket();
160 packet.setType(MessagePacket.TYPE_GROUPCHAT);
161 packet.setTo(conversation.getJid().asBareJid());
162 Element subjectChild = new Element("subject");
163 subjectChild.setContent(subject);
164 packet.addChild(subjectChild);
165 packet.setFrom(conversation.getAccount().getJid().asBareJid());
166 return packet;
167 }
168
169 public MessagePacket directInvite(final Conversation conversation, final Jid contact) {
170 MessagePacket packet = new MessagePacket();
171 packet.setType(MessagePacket.TYPE_NORMAL);
172 packet.setTo(contact);
173 packet.setFrom(conversation.getAccount().getJid());
174 Element x = packet.addChild("x", "jabber:x:conference");
175 x.setAttribute("jid", conversation.getJid().asBareJid().toString());
176 String password = conversation.getMucOptions().getPassword();
177 if (password != null) {
178 x.setAttribute("password",password);
179 }
180 return packet;
181 }
182
183 public MessagePacket invite(Conversation conversation, Jid contact) {
184 MessagePacket packet = new MessagePacket();
185 packet.setTo(conversation.getJid().asBareJid());
186 packet.setFrom(conversation.getAccount().getJid());
187 Element x = new Element("x");
188 x.setAttribute("xmlns", "http://jabber.org/protocol/muc#user");
189 Element invite = new Element("invite");
190 invite.setAttribute("to", contact.asBareJid().toString());
191 x.addChild(invite);
192 packet.addChild(x);
193 return packet;
194 }
195
196 public MessagePacket received(Account account, MessagePacket originalMessage, ArrayList<String> namespaces, int type) {
197 MessagePacket receivedPacket = new MessagePacket();
198 receivedPacket.setType(type);
199 receivedPacket.setTo(originalMessage.getFrom());
200 receivedPacket.setFrom(account.getJid());
201 for(String namespace : namespaces) {
202 receivedPacket.addChild("received", namespace).setAttribute("id", originalMessage.getId());
203 }
204 receivedPacket.addChild("store", "urn:xmpp:hints");
205 return receivedPacket;
206 }
207
208 public MessagePacket received(Account account, Jid to, String id) {
209 MessagePacket packet = new MessagePacket();
210 packet.setFrom(account.getJid());
211 packet.setTo(to);
212 packet.addChild("received","urn:xmpp:receipts").setAttribute("id",id);
213 packet.addChild("store", "urn:xmpp:hints");
214 return packet;
215 }
216}