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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);
} 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);
}
}
}
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