1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
|
package eu.siacs.conversations.parser;
import net.java.otr4j.session.Session;
import net.java.otr4j.session.SessionStatus;
import eu.siacs.conversations.entities.Account;
import eu.siacs.conversations.entities.Conversation;
import eu.siacs.conversations.entities.Message;
import eu.siacs.conversations.services.XmppConnectionService;
import eu.siacs.conversations.utils.CryptoHelper;
import eu.siacs.conversations.xml.Element;
import eu.siacs.conversations.xmpp.stanzas.MessagePacket;
public class MessageParser extends AbstractParser {
public MessageParser(XmppConnectionService service) {
super(service);
}
public Message parseChat(MessagePacket packet, Account account) {
String[] fromParts = packet.getFrom().split("/");
Conversation conversation = mXmppConnectionService
.findOrCreateConversation(account, fromParts[0], false);
conversation.setLatestMarkableMessageId(getMarkableMessageId(packet));
updateLastseen(packet, account,true);
String pgpBody = getPgpBody(packet);
Message finishedMessage;
if (pgpBody != null) {
finishedMessage = new Message(conversation, packet.getFrom(), pgpBody,
Message.ENCRYPTION_PGP, Message.STATUS_RECIEVED);
} else {
finishedMessage = new Message(conversation, packet.getFrom(),
packet.getBody(), Message.ENCRYPTION_NONE,
Message.STATUS_RECIEVED);
}
finishedMessage.setTime(getTimestamp(packet));
return finishedMessage;
}
public Message parseOtrChat(MessagePacket packet, Account account) {
boolean properlyAddressed = (packet.getTo().split("/").length == 2)
|| (account.countPresences() == 1);
String[] fromParts = packet.getFrom().split("/");
Conversation conversation = mXmppConnectionService
.findOrCreateConversation(account, fromParts[0], false);
updateLastseen(packet, account,true);
String body = packet.getBody();
if (!conversation.hasValidOtrSession()) {
if (properlyAddressed) {
conversation.startOtrSession(
mXmppConnectionService.getApplicationContext(),
fromParts[1], false);
} else {
return null;
}
} else {
String foreignPresence = conversation.getOtrSession()
.getSessionID().getUserID();
if (!foreignPresence.equals(fromParts[1])) {
conversation.endOtrIfNeeded();
if (properlyAddressed) {
conversation.startOtrSession(
mXmppConnectionService.getApplicationContext(),
fromParts[1], false);
} else {
return null;
}
}
}
try {
Session otrSession = conversation.getOtrSession();
SessionStatus before = otrSession.getSessionStatus();
body = otrSession.transformReceiving(body);
SessionStatus after = otrSession.getSessionStatus();
if ((before != after) && (after == SessionStatus.ENCRYPTED)) {
mXmppConnectionService.onOtrSessionEstablished(conversation);
} else if ((before != after) && (after == SessionStatus.FINISHED)) {
conversation.resetOtrSession();
}
if ((body == null) || (body.isEmpty())) {
return null;
}
if (body.startsWith(CryptoHelper.FILETRANSFER)) {
String key = body.substring(CryptoHelper.FILETRANSFER.length());
conversation.setSymmetricKey(CryptoHelper.hexToBytes(key));
return null;
}
conversation.setLatestMarkableMessageId(getMarkableMessageId(packet));
Message finishedMessage = new Message(conversation, packet.getFrom(), body,
Message.ENCRYPTION_OTR, Message.STATUS_RECIEVED);
finishedMessage.setTime(getTimestamp(packet));
return finishedMessage;
} catch (Exception e) {
String receivedId = packet.getId();
if (receivedId!=null) {
mXmppConnectionService.replyWithError(account,packet);
}
conversation.resetOtrSession();
return null;
}
}
public Message parseGroupchat(MessagePacket packet, Account account) {
int status;
String[] fromParts = packet.getFrom().split("/");
Conversation conversation = mXmppConnectionService
.findOrCreateConversation(account, fromParts[0], true);
if (packet.hasChild("subject")) {
conversation.getMucOptions().setSubject(
packet.findChild("subject").getContent());
mXmppConnectionService.updateUi(conversation, false);
return null;
}
if ((fromParts.length == 1)) {
return null;
}
String counterPart = fromParts[1];
if (counterPart.equals(conversation.getMucOptions().getNick())) {
if (mXmppConnectionService.markMessage(conversation,
packet.getId(), Message.STATUS_SEND)) {
return null;
} else {
status = Message.STATUS_SEND;
}
} else {
status = Message.STATUS_RECIEVED;
}
String pgpBody = getPgpBody(packet);
conversation.setLatestMarkableMessageId(getMarkableMessageId(packet));
Message finishedMessage;
if (pgpBody == null) {
finishedMessage = new Message(conversation, counterPart, packet.getBody(),
Message.ENCRYPTION_NONE, status);
} else {
finishedMessage= new Message(conversation, counterPart, pgpBody,
Message.ENCRYPTION_PGP, status);
}
finishedMessage.setTime(getTimestamp(packet));
return finishedMessage;
}
public Message parseCarbonMessage(MessagePacket packet, Account account) {
int status;
String fullJid;
Element forwarded;
if (packet.hasChild("received")) {
forwarded = packet.findChild("received").findChild("forwarded");
status = Message.STATUS_RECIEVED;
} else if (packet.hasChild("sent")) {
forwarded = packet.findChild("sent").findChild("forwarded");
status = Message.STATUS_SEND;
} else {
return null;
}
if (forwarded == null) {
return null;
}
Element message = forwarded.findChild("message");
if ((message == null) || (!message.hasChild("body")))
return null; // either malformed or boring
if (status == Message.STATUS_RECIEVED) {
fullJid = message.getAttribute("from");
updateLastseen(message, account,true);
} else {
fullJid = message.getAttribute("to");
}
String[] parts = fullJid.split("/");
Conversation conversation = mXmppConnectionService
.findOrCreateConversation(account, parts[0], false);
conversation.setLatestMarkableMessageId(getMarkableMessageId(packet));
String pgpBody = getPgpBody(message);
Message finishedMessage;
if (pgpBody != null) {
finishedMessage = new Message(conversation, fullJid, pgpBody,Message.ENCRYPTION_PGP, status);
} else {
String body = message.findChild("body").getContent();
finishedMessage= new Message(conversation, fullJid, body,Message.ENCRYPTION_NONE, status);
}
finishedMessage.setTime(getTimestamp(message));
return finishedMessage;
}
public void parseError(MessagePacket packet, Account account) {
String[] fromParts = packet.getFrom().split("/");
mXmppConnectionService.markMessage(account, fromParts[0],
packet.getId(), Message.STATUS_SEND_FAILED);
}
public void parseNormal(MessagePacket packet, Account account) {
if (packet.hasChild("displayed","urn:xmpp:chat-markers:0")) {
String id = packet.findChild("displayed","urn:xmpp:chat-markers:0").getAttribute("id");
String[] fromParts = packet.getFrom().split("/");
updateLastseen(packet, account,true);
mXmppConnectionService.markMessage(account,fromParts[0], id, Message.STATUS_SEND_DISPLAYED);
} else if (packet.hasChild("received","urn:xmpp:chat-markers:0")) {
String id = packet.findChild("received","urn:xmpp:chat-markers:0").getAttribute("id");
String[] fromParts = packet.getFrom().split("/");
updateLastseen(packet, account,false);
mXmppConnectionService.markMessage(account,fromParts[0], id, Message.STATUS_SEND_RECEIVED);
} else if (packet.hasChild("x")) {
Element x = packet.findChild("x");
if (x.hasChild("invite")) {
Conversation conversation = mXmppConnectionService.findOrCreateConversation(account, packet.getFrom(),
true);
mXmppConnectionService.updateUi(conversation, false);
}
}
}
private String getPgpBody(Element message) {
Element child = message.findChild("x", "jabber:x:encrypted");
if (child == null) {
return null;
} else {
return child.getContent();
}
}
private String getMarkableMessageId(Element message) {
if (message.hasChild("markable", "urn:xmpp:chat-markers:0")) {
return message.getAttribute("id");
} else {
return null;
}
}
}
|
