1package eu.siacs.conversations.generator;
2
3import java.net.URL;
4import java.text.SimpleDateFormat;
5import java.util.ArrayList;
6import java.util.Date;
7import java.util.Locale;
8import java.util.TimeZone;
9
10import eu.siacs.conversations.Config;
11import eu.siacs.conversations.crypto.axolotl.AxolotlService;
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.http.P1S3UrlStreamHandler;
17import eu.siacs.conversations.services.XmppConnectionService;
18import eu.siacs.conversations.xml.Element;
19import eu.siacs.conversations.xml.Namespace;
20import eu.siacs.conversations.xmpp.chatstate.ChatState;
21import eu.siacs.conversations.xmpp.stanzas.MessagePacket;
22import rocks.xmpp.addr.Jid;
23
24public class MessageGenerator extends AbstractGenerator {
25 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";
26 private static final String PGP_FALLBACK_MESSAGE = "I sent you a PGP encrypted message but your client doesn’t seem to support that.";
27
28 public MessageGenerator(XmppConnectionService service) {
29 super(service);
30 }
31
32 private MessagePacket preparePacket(Message message) {
33 Conversation conversation = (Conversation) message.getConversation();
34 Account account = conversation.getAccount();
35 MessagePacket packet = new MessagePacket();
36 final boolean isWithSelf = conversation.getContact().isSelf();
37 if (conversation.getMode() == Conversation.MODE_SINGLE) {
38 packet.setTo(message.getCounterpart());
39 packet.setType(MessagePacket.TYPE_CHAT);
40 if (!isWithSelf) {
41 packet.addChild("request", "urn:xmpp:receipts");
42 }
43 } else if (message.isPrivateMessage()) {
44 packet.setTo(message.getCounterpart());
45 packet.setType(MessagePacket.TYPE_CHAT);
46 packet.addChild("x", "http://jabber.org/protocol/muc#user");
47 packet.addChild("request", "urn:xmpp:receipts");
48 } else {
49 packet.setTo(message.getCounterpart().asBareJid());
50 packet.setType(MessagePacket.TYPE_GROUPCHAT);
51 }
52 if (conversation.isSingleOrPrivateAndNonAnonymous() && !message.isPrivateMessage()) {
53 packet.addChild("markable", "urn:xmpp:chat-markers:0");
54 }
55 packet.setFrom(account.getJid());
56 packet.setId(message.getUuid());
57 packet.addChild("origin-id", Namespace.STANZA_IDS).setAttribute("id", message.getUuid());
58 if (message.edited()) {
59 packet.addChild("replace", "urn:xmpp:message-correct:0").setAttribute("id", message.getEditedIdWireFormat());
60 }
61 return packet;
62 }
63
64 public void addDelay(MessagePacket packet, long timestamp) {
65 final SimpleDateFormat mDateFormat = new SimpleDateFormat(
66 "yyyy-MM-dd'T'HH:mm:ss.SSS'Z'", Locale.US);
67 mDateFormat.setTimeZone(TimeZone.getTimeZone("UTC"));
68 Element delay = packet.addChild("delay", "urn:xmpp:delay");
69 Date date = new Date(timestamp);
70 delay.setAttribute("stamp", mDateFormat.format(date));
71 }
72
73 public MessagePacket generateAxolotlChat(Message message, XmppAxolotlMessage axolotlMessage) {
74 MessagePacket packet = preparePacket(message);
75 if (axolotlMessage == null) {
76 return null;
77 }
78 packet.setAxolotlMessage(axolotlMessage.toElement());
79 packet.setBody(OMEMO_FALLBACK_MESSAGE);
80 packet.addChild("store", "urn:xmpp:hints");
81 packet.addChild("encryption", "urn:xmpp:eme:0")
82 .setAttribute("name", "OMEMO")
83 .setAttribute("namespace", AxolotlService.PEP_PREFIX);
84 return packet;
85 }
86
87 public MessagePacket generateKeyTransportMessage(Jid to, XmppAxolotlMessage axolotlMessage) {
88 MessagePacket packet = new MessagePacket();
89 packet.setType(MessagePacket.TYPE_CHAT);
90 packet.setTo(to);
91 packet.setAxolotlMessage(axolotlMessage.toElement());
92 packet.addChild("store", "urn:xmpp:hints");
93 return packet;
94 }
95
96 public MessagePacket generateChat(Message message) {
97 MessagePacket packet = preparePacket(message);
98 String content;
99 if (message.hasFileOnRemoteHost()) {
100 Message.FileParams fileParams = message.getFileParams();
101 final URL url = fileParams.url;
102 if (P1S3UrlStreamHandler.PROTOCOL_NAME.equals(url.getProtocol())) {
103 Element x = packet.addChild("x", Namespace.P1_S3_FILE_TRANSFER);
104 final String file = url.getFile();
105 x.setAttribute("name", file.charAt(0) == '/' ? file.substring(1) : file);
106 x.setAttribute("fileid", url.getHost());
107 return packet;
108 } else {
109 content = url.toString();
110 packet.addChild("x", Namespace.OOB).addChild("url").setContent(content);
111 }
112 } else {
113 content = message.getBody();
114 }
115 packet.setBody(content);
116 return packet;
117 }
118
119 public MessagePacket generatePgpChat(Message message) {
120 MessagePacket packet = preparePacket(message);
121 if (message.hasFileOnRemoteHost()) {
122 Message.FileParams fileParams = message.getFileParams();
123 final URL url = fileParams.url;
124 if (P1S3UrlStreamHandler.PROTOCOL_NAME.equals(url.getProtocol())) {
125 Element x = packet.addChild("x", Namespace.P1_S3_FILE_TRANSFER);
126 final String file = url.getFile();
127 x.setAttribute("name", file.charAt(0) == '/' ? file.substring(1) : file);
128 x.setAttribute("fileid", url.getHost());
129 } else {
130 packet.setBody(url.toString());
131 packet.addChild("x", Namespace.OOB).addChild("url").setContent(url.toString());
132 }
133 } else {
134 if (Config.supportUnencrypted()) {
135 packet.setBody(PGP_FALLBACK_MESSAGE);
136 }
137 if (message.getEncryption() == Message.ENCRYPTION_DECRYPTED) {
138 packet.addChild("x", "jabber:x:encrypted").setContent(message.getEncryptedBody());
139 } else if (message.getEncryption() == Message.ENCRYPTION_PGP) {
140 packet.addChild("x", "jabber:x:encrypted").setContent(message.getBody());
141 }
142 packet.addChild("encryption", "urn:xmpp:eme:0")
143 .setAttribute("namespace", "jabber:x:encrypted");
144 }
145 return packet;
146 }
147
148 public MessagePacket generateChatState(Conversation conversation) {
149 final Account account = conversation.getAccount();
150 MessagePacket packet = new MessagePacket();
151 packet.setType(conversation.getMode() == Conversation.MODE_MULTI ? MessagePacket.TYPE_GROUPCHAT : MessagePacket.TYPE_CHAT);
152 packet.setTo(conversation.getJid().asBareJid());
153 packet.setFrom(account.getJid());
154 packet.addChild(ChatState.toElement(conversation.getOutgoingChatState()));
155 packet.addChild("no-store", "urn:xmpp:hints");
156 packet.addChild("no-storage", "urn:xmpp:hints"); //wrong! don't copy this. Its *store*
157 return packet;
158 }
159
160 public MessagePacket confirm(final Account account, final Jid to, final String id, final Jid counterpart, final boolean groupChat) {
161 MessagePacket packet = new MessagePacket();
162 packet.setType(groupChat ? MessagePacket.TYPE_GROUPCHAT : MessagePacket.TYPE_CHAT);
163 packet.setTo(groupChat ? to.asBareJid() : to);
164 packet.setFrom(account.getJid());
165 Element displayed = packet.addChild("displayed", "urn:xmpp:chat-markers:0");
166 displayed.setAttribute("id", id);
167 if (groupChat && counterpart != null) {
168 displayed.setAttribute("sender", counterpart.toString());
169 }
170 packet.addChild("store", "urn:xmpp:hints");
171 return packet;
172 }
173
174 public MessagePacket conferenceSubject(Conversation conversation, String subject) {
175 MessagePacket packet = new MessagePacket();
176 packet.setType(MessagePacket.TYPE_GROUPCHAT);
177 packet.setTo(conversation.getJid().asBareJid());
178 packet.addChild("subject").setContent(subject);
179 packet.setFrom(conversation.getAccount().getJid().asBareJid());
180 return packet;
181 }
182
183 public MessagePacket directInvite(final Conversation conversation, final Jid contact) {
184 MessagePacket packet = new MessagePacket();
185 packet.setType(MessagePacket.TYPE_NORMAL);
186 packet.setTo(contact);
187 packet.setFrom(conversation.getAccount().getJid());
188 Element x = packet.addChild("x", "jabber:x:conference");
189 x.setAttribute("jid", conversation.getJid().asBareJid().toString());
190 String password = conversation.getMucOptions().getPassword();
191 if (password != null) {
192 x.setAttribute("password", password);
193 }
194 if (contact.isFullJid()) {
195 packet.addChild("no-store", "urn:xmpp:hints");
196 packet.addChild("no-copy", "urn:xmpp:hints");
197 }
198 return packet;
199 }
200
201 public MessagePacket invite(Conversation conversation, Jid contact) {
202 MessagePacket packet = new MessagePacket();
203 packet.setTo(conversation.getJid().asBareJid());
204 packet.setFrom(conversation.getAccount().getJid());
205 Element x = new Element("x");
206 x.setAttribute("xmlns", "http://jabber.org/protocol/muc#user");
207 Element invite = new Element("invite");
208 invite.setAttribute("to", contact.asBareJid().toString());
209 x.addChild(invite);
210 packet.addChild(x);
211 return packet;
212 }
213
214 public MessagePacket received(Account account, MessagePacket originalMessage, ArrayList<String> namespaces, int type) {
215 MessagePacket receivedPacket = new MessagePacket();
216 receivedPacket.setType(type);
217 receivedPacket.setTo(originalMessage.getFrom());
218 receivedPacket.setFrom(account.getJid());
219 for (String namespace : namespaces) {
220 receivedPacket.addChild("received", namespace).setAttribute("id", originalMessage.getId());
221 }
222 receivedPacket.addChild("store", "urn:xmpp:hints");
223 return receivedPacket;
224 }
225
226 public MessagePacket received(Account account, Jid to, String id) {
227 MessagePacket packet = new MessagePacket();
228 packet.setFrom(account.getJid());
229 packet.setTo(to);
230 packet.addChild("received", "urn:xmpp:receipts").setAttribute("id", id);
231 packet.addChild("store", "urn:xmpp:hints");
232 return packet;
233 }
234}