blob: bca7ab3c73551f5a18f01841f49562ec48b044b1 (
plain)
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
|
/*
* Copyright 2016 OpenMarket Ltd
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.matrix.olm;
import android.text.TextUtils;
public class OlmOutboundGroupSession {
private static final String LOG_TAG = "OlmOutboundGroupSession";
/** session raw pointer value returned by JNI.<br>
* this value uniquely identifies the native inbound group session instance.
*/
private long mNativeOlmOutboundGroupSessionId;
/**
* Getter on the native outbound group session ID.
* @return native outbound group session ID
*/
public long getOlmInboundGroupSessionId(){
return mNativeOlmOutboundGroupSessionId;
}
/**
* Constructor.<br>
* Create and save a new session native instance ID and
* initialise a new outbound group session.<br>
* See {@link #initNewSession()} and {@link #initOutboundGroupSession()}
* @throws OlmException
*/
public OlmOutboundGroupSession() throws OlmException {
if(initNewSession()) {
if( 0 != initOutboundGroupSession()) {
releaseSession();// prevent memory leak before throwing
throw new OlmException(OlmException.EXCEPTION_CODE_INIT_OUTBOUND_GROUP_SESSION);
}
} else {
throw new OlmException(OlmException.EXCEPTION_CODE_INIT_NEW_SESSION_FAILURE);
}
}
/**
* Release native session and invalid its JAVA reference counter part.<br>
* Public API for {@link #releaseSessionJni()}.
* To be called before any other API call.
*/
public void releaseSession() {
releaseSessionJni();
mNativeOlmOutboundGroupSessionId = 0;
}
/**
* Destroy the corresponding OLM outbound group session native object.<br>
* This method must ALWAYS be called when this JAVA instance
* is destroyed (ie. garbage collected) to prevent memory leak in native side.
* See {@link #initNewSessionJni()}.
*/
private native void releaseSessionJni();
/**
* Create and save the session native instance ID.
* Wrapper for {@link #initNewSessionJni()}.<br>
* To be called before any other API call.
* @return true if init succeed, false otherwise.
*/
private boolean initNewSession() {
boolean retCode = false;
if(0 != (mNativeOlmOutboundGroupSessionId = initNewSessionJni())){
retCode = true;
}
return retCode;
}
/**
* Create the corresponding OLM outbound group session in native side.<br>
* Do not forget to call {@link #releaseSession()} when JAVA side is done.
* @return native session instance identifier (see {@link #mNativeOlmOutboundGroupSessionId})
*/
private native long initNewSessionJni();
/**
* Start a new outbound group session.<br>
* @return 0 if operation succeed, -1 otherwise
*/
private int initOutboundGroupSession() {
return initOutboundGroupSessionJni();
}
private native int initOutboundGroupSessionJni();
/**
* Get a base64-encoded identifier for this session.
* @return session identifier if operation succeed, null otherwise.
*/
public String sessionIdentifier() {
String retValue = null;
retValue = sessionIdentifierJni();
return retValue;
}
private native String sessionIdentifierJni();
/**
* Get the current message index for this session.<br>
* Each message is sent with an increasing index, this
* method returns the index for the next message.
* @return current session index
*/
public int messageIndex() {
int retValue =0;
retValue = messageIndexJni();
return retValue;
}
private native int messageIndexJni();
/**
* Get the base64-encoded current ratchet key for this session.<br>
* Each message is sent with a different ratchet key. This method returns the
* ratchet key that will be used for the next message.
* @return outbound session key
*/
public String sessionKey() {
String retValue = null;
retValue = sessionKeyJni();
return retValue;
}
private native String sessionKeyJni();
/**
* Encrypt some plain-text message.<br>
* @param aClearMsg message to be encrypted
* @return the encrypted message if operation succeed, null otherwise
*/
public String encryptMessage(String aClearMsg) {
String retValue = null;
if(!TextUtils.isEmpty(aClearMsg)) {
retValue = encryptMessageJni(aClearMsg);
}
return retValue;
}
private native String encryptMessageJni(String aClearMsg);
}
|
