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
|
using Dino.Entities;
using Signal;
using Qlite;
using Xmpp;
using Gee;
namespace Dino.Plugins.Omemo {
public class Manager : StreamInteractionModule, Object {
public const string id = "omemo_manager";
private StreamInteractor stream_interactor;
private Database db;
private ArrayList<Entities.Message> to_send_after_devicelist = new ArrayList<Entities.Message>();
private ArrayList<Entities.Message> to_send_after_session = new ArrayList<Entities.Message>();
private Manager(StreamInteractor stream_interactor, Database db) {
this.stream_interactor = stream_interactor;
this.db = db;
stream_interactor.account_added.connect(on_account_added);
MessageManager.get_instance(stream_interactor).pre_message_received.connect(on_pre_message_received);
MessageManager.get_instance(stream_interactor).pre_message_send.connect(on_pre_message_send);
}
private void on_pre_message_received(Entities.Message message, Xmpp.Message.Stanza message_stanza, Conversation conversation) {
if (MessageFlag.get_flag(message_stanza) != null && MessageFlag.get_flag(message_stanza).decrypted) {
message.encryption = Encryption.OMEMO;
}
}
private void on_pre_message_send(Entities.Message message, Xmpp.Message.Stanza message_stanza, Conversation conversation) {
if (message.encryption == Encryption.OMEMO) {
StreamModule module = stream_interactor.get_stream(conversation.account).get_module(StreamModule.IDENTITY);
EncryptStatus status = module.encrypt(message_stanza, conversation.account.bare_jid.to_string());
if (status.other_failure > 0 || (status.other_lost == status.other_devices && status.other_devices > 0)) {
message.marked = Entities.Message.Marked.WONTSEND;
} else if (status.other_unknown > 0 || status.own_devices == 0) {
message.marked = Entities.Message.Marked.UNSENT;
} else if (!status.encrypted) {
message.marked = Entities.Message.Marked.WONTSEND;
}
if (status.other_unknown > 0) {
bool cont = true;
lock(to_send_after_session) {
foreach(Entities.Message msg in to_send_after_session) {
if (msg.counterpart.bare_jid.to_string() == message.counterpart.bare_jid.to_string()) cont = false;
}
to_send_after_session.add(message);
}
if (cont) module.start_sessions_with(stream_interactor.get_stream(conversation.account), message.counterpart.bare_jid.to_string());
}
if (status.own_unknown > 0) {
module.start_sessions_with(stream_interactor.get_stream(conversation.account), conversation.account.bare_jid.to_string());
}
if (status.own_devices == 0) {
lock (to_send_after_session) {
to_send_after_devicelist.add(message);
}
}
}
}
private void on_account_added(Account account) {
stream_interactor.module_manager.get_module(account, StreamModule.IDENTITY).store_created.connect((store) => on_store_created(account, store));
stream_interactor.module_manager.get_module(account, StreamModule.IDENTITY).device_list_loaded.connect(() => on_device_list_loaded(account));
stream_interactor.module_manager.get_module(account, StreamModule.IDENTITY).session_started.connect((jid, device_id) => on_session_started(account, jid));
}
private void on_session_started(Account account, string jid) {
lock(to_send_after_session) {
Iterator<Entities.Message> iter = to_send_after_session.iterator();
while (iter.next()) {
Entities.Message msg = iter.get();
if (msg.account.bare_jid.to_string() == account.bare_jid.to_string() && msg.counterpart.bare_jid.to_string() == jid) {
Entities.Conversation conv = ConversationManager.get_instance(stream_interactor).get_conversation(msg.counterpart, account);
MessageManager.get_instance(stream_interactor).send_xmpp_message(msg, conv, true);
iter.remove();
}
}
}
}
private void on_device_list_loaded(Account account) {
lock(to_send_after_devicelist) {
Iterator<Entities.Message> iter = to_send_after_devicelist.iterator();
while (iter.next()) {
Entities.Message msg = iter.get();
if (msg.account.bare_jid.to_string() == account.bare_jid.to_string()) {
Entities.Conversation conv = ConversationManager.get_instance(stream_interactor).get_conversation(msg.counterpart, account);
MessageManager.get_instance(stream_interactor).send_xmpp_message(msg, conv, true);
iter.remove();
}
}
}
}
private void on_store_created(Account account, Store store) {
Qlite.Row? row = null;
try {
row = db.identity.row_with(db.identity.account_id, account.id).inner;
} catch (Error e) {
// Ignore error
}
int identity_id = -1;
if (row == null) {
// OMEMO not yet initialized, starting with empty base
try {
store.identity_key_store.local_registration_id = Random.int_range(1, int32.MAX);
Signal.ECKeyPair key_pair = Plugin.context.generate_key_pair();
store.identity_key_store.identity_key_private = key_pair.private.serialize();
store.identity_key_store.identity_key_public = key_pair.public.serialize();
identity_id = (int) db.identity.insert().or("REPLACE")
.value(db.identity.account_id, account.id)
.value(db.identity.device_id, (int) store.local_registration_id)
.value(db.identity.identity_key_private_base64, Base64.encode(store.identity_key_store.identity_key_private))
.value(db.identity.identity_key_public_base64, Base64.encode(store.identity_key_store.identity_key_public))
.perform();
} catch (Error e) {
// Ignore error
}
} else {
store.identity_key_store.local_registration_id = row[db.identity.device_id];
store.identity_key_store.identity_key_private = Base64.decode(row[db.identity.identity_key_private_base64]);
store.identity_key_store.identity_key_public = Base64.decode(row[db.identity.identity_key_public_base64]);
identity_id = row[db.identity.id];
}
if (identity_id >= 0) {
store.signed_pre_key_store = new BackedSignedPreKeyStore(db, identity_id);
store.pre_key_store = new BackedPreKeyStore(db, identity_id);
store.session_store = new BackedSessionStore(db, identity_id);
} else {
print(@"WARN: OMEMO store for $(account.bare_jid) is not persisted");
}
}
public bool can_encrypt(Entities.Conversation conversation) {
return stream_interactor.get_stream(conversation.account).get_module(StreamModule.IDENTITY).is_known_address(conversation.counterpart.bare_jid.to_string());
}
internal string get_id() {
return id;
}
public static void start(StreamInteractor stream_interactor, Database db) {
Manager m = new Manager(stream_interactor, db);
stream_interactor.add_module(m);
}
public static Manager? get_instance(StreamInteractor stream_interactor) {
return (Manager) stream_interactor.get_module(id);
}
}
}
|
