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
|
package de.gultsch.chat.utils;
import java.util.List;
import net.java.otr4j.session.Session;
import net.java.otr4j.session.SessionStatus;
import android.util.Log;
import de.gultsch.chat.entities.Account;
import de.gultsch.chat.entities.Conversation;
import de.gultsch.chat.entities.Message;
import de.gultsch.chat.services.XmppConnectionService;
import de.gultsch.chat.xml.Element;
import de.gultsch.chat.xmpp.MessagePacket;
public class MessageParser {
protected static final String LOGTAG = "xmppService";
public static Message parsePlainTextChat(MessagePacket packet, Account account, XmppConnectionService service) {
String[] fromParts = packet.getFrom().split("/");
Conversation conversation = service.findOrCreateConversation(account, fromParts[0],false);
String body = packet.getBody();
return new Message(conversation, packet.getFrom(), body, Message.ENCRYPTION_NONE, Message.STATUS_RECIEVED);
}
public static Message parsePgpChat(String pgpBody, MessagePacket packet, Account account, XmppConnectionService service) {
String[] fromParts = packet.getFrom().split("/");
Conversation conversation = service.findOrCreateConversation(account, fromParts[0],false);
return new Message(conversation, packet.getFrom(), pgpBody, Message.ENCRYPTION_PGP, Message.STATUS_RECIEVED);
}
public static Message parseOtrChat(MessagePacket packet, Account account, XmppConnectionService service) {
String[] fromParts = packet.getFrom().split("/");
Conversation conversation = service.findOrCreateConversation(account, fromParts[0],false);
String body = packet.getBody();
if (!conversation.hasValidOtrSession()) {
conversation.startOtrSession(service.getApplicationContext(), fromParts[1]);
}
try {
Session otrSession = conversation.getOtrSession();
SessionStatus before = otrSession
.getSessionStatus();
body = otrSession.transformReceiving(body);
SessionStatus after = otrSession.getSessionStatus();
if ((before != after)
&& (after == SessionStatus.ENCRYPTED)) {
Log.d(LOGTAG, "otr session etablished");
List<Message> messages = conversation
.getMessages();
for (int i = 0; i < messages.size(); ++i) {
Message msg = messages.get(i);
if ((msg.getStatus() == Message.STATUS_UNSEND)
&& (msg.getEncryption() == Message.ENCRYPTION_OTR)) {
MessagePacket outPacket = service.prepareMessagePacket(
account, msg, otrSession);
msg.setStatus(Message.STATUS_SEND);
service.databaseBackend.updateMessage(msg);
account.getXmppConnection()
.sendMessagePacket(outPacket);
}
}
if (service.convChangedListener!=null) {
service.convChangedListener.onConversationListChanged();
}
} else if ((before != after) && (after == SessionStatus.FINISHED)) {
conversation.resetOtrSession();
Log.d(LOGTAG,"otr session stoped");
}
} catch (Exception e) {
Log.d(LOGTAG, "error receiving otr. resetting");
conversation.resetOtrSession();
return null;
}
if (body == null) {
return null;
}
return new Message(conversation, packet.getFrom(), body, Message.ENCRYPTION_OTR,Message.STATUS_RECIEVED);
}
public static Message parseGroupchat(MessagePacket packet, Account account, XmppConnectionService service) {
int status;
String[] fromParts = packet.getFrom().split("/");
Conversation conversation = service.findOrCreateConversation(account, fromParts[0],true);
if ((fromParts.length == 1) || (packet.hasChild("subject"))) {
return null;
}
String counterPart = fromParts[1];
if (counterPart.equals(account.getUsername())) {
status = Message.STATUS_SEND;
} else {
status = Message.STATUS_RECIEVED;
}
return new Message(conversation, counterPart, packet.getBody(), Message.ENCRYPTION_NONE, status);
}
public static Message parseCarbonMessage(MessagePacket packet,
Account account, XmppConnectionService service) {
// TODO Auto-generated method stub
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;
}
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");
} else {
fullJid = message.getAttribute("to");
}
String[] parts = fullJid.split("/");
Conversation conversation = service.findOrCreateConversation(account, parts[0],false);
return new Message(conversation,fullJid, message.findChild("body").getContent(), Message.ENCRYPTION_NONE,status);
}
public static Message parseError(MessagePacket packet, Account account, XmppConnectionService service) {
String[] fromParts = packet.getFrom().split("/");
Conversation conversation = service.findOrCreateConversation(account, fromParts[0],false);
Element error = packet.findChild("error");
String errorName = error.getChildren().get(0).getName();
String displayError;
if (errorName.equals("service-unavailable")) {
displayError = "Contact is offline and does not have offline storage";
} else {
displayError = errorName.replace("-", " ");
}
return new Message(conversation, packet.getFrom(), displayError, Message.ENCRYPTION_NONE, Message.STATUS_ERROR);
}
public static String getPgpBody(MessagePacket packet) {
for(Element child : packet.getChildren()) {
if (child.getName().equals("x")&&child.getAttribute("xmlns").equals("jabber:x:encrypted")) {
return child.getContent();
}
}
return null;
}
}
|
