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