diff options
Diffstat (limited to 'plugins/omemo/src/manager.vala')
| -rw-r--r-- | plugins/omemo/src/manager.vala | 270 |
1 files changed, 270 insertions, 0 deletions
diff --git a/plugins/omemo/src/manager.vala b/plugins/omemo/src/manager.vala new file mode 100644 index 00000000..69a69d9c --- /dev/null +++ b/plugins/omemo/src/manager.vala @@ -0,0 +1,270 @@ +using Dino.Entities; +using Signal; +using Qlite; +using Xmpp; +using Gee; + +namespace Dino.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) { + Module module = Module.get_module(stream_interactor.get_stream(conversation.account)); + 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, Module.IDENTITY).store_created.connect((context, store) => on_store_created(account, context, store)); + stream_interactor.module_manager.get_module(account, Module.IDENTITY).device_list_loaded.connect(() => on_device_list_loaded(account)); + stream_interactor.module_manager.get_module(account, Module.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, Context context, 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 + store.identity_key_store.local_registration_id = Random.int_range(1, int32.MAX); + + Signal.ECKeyPair key_pair = 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(); + + try { + 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"); + } + } + + private class BackedSignedPreKeyStore : SimpleSignedPreKeyStore { + private Database db; + private int identity_id; + + public BackedSignedPreKeyStore(Database db, int identity_id) { + this.db = db; + this.identity_id = identity_id; + init(); + } + + private void init() { + foreach (Row row in db.signed_pre_key.select().with(db.signed_pre_key.identity_id, "=", identity_id)) { + store_signed_pre_key(row[db.signed_pre_key.signed_pre_key_id], Base64.decode(row[db.signed_pre_key.record_base64])); + } + + signed_pre_key_stored.connect(on_signed_pre_key_stored); + signed_pre_key_deleted.connect(on_signed_pre_key_deleted); + } + + public void on_signed_pre_key_stored(SignedPreKeyStore.Key key) { + db.signed_pre_key.insert().or("REPLACE") + .value(db.signed_pre_key.identity_id, identity_id) + .value(db.signed_pre_key.signed_pre_key_id, (int) key.key_id) + .value(db.signed_pre_key.record_base64, Base64.encode(key.record)) + .perform(); + } + + public void on_signed_pre_key_deleted(SignedPreKeyStore.Key key) { + db.signed_pre_key.delete() + .with(db.signed_pre_key.identity_id, "=", identity_id) + .with(db.signed_pre_key.signed_pre_key_id, "=", (int) key.key_id) + .perform(); + } + } + + private class BackedPreKeyStore : SimplePreKeyStore { + private Database db; + private int identity_id; + + public BackedPreKeyStore(Database db, int identity_id) { + this.db = db; + this.identity_id = identity_id; + init(); + } + + private void init() { + foreach (Row row in db.pre_key.select().with(db.pre_key.identity_id, "=", identity_id)) { + store_pre_key(row[db.pre_key.pre_key_id], Base64.decode(row[db.pre_key.record_base64])); + } + + pre_key_stored.connect(on_pre_key_stored); + pre_key_deleted.connect(on_pre_key_deleted); + } + + public void on_pre_key_stored(PreKeyStore.Key key) { + db.pre_key.insert().or("REPLACE") + .value(db.pre_key.identity_id, identity_id) + .value(db.pre_key.pre_key_id, (int) key.key_id) + .value(db.pre_key.record_base64, Base64.encode(key.record)) + .perform(); + } + + public void on_pre_key_deleted(PreKeyStore.Key key) { + db.pre_key.delete() + .with(db.pre_key.identity_id, "=", identity_id) + .with(db.pre_key.pre_key_id, "=", (int) key.key_id) + .perform(); + } + } + + private class BackedSessionStore : SimpleSessionStore { + private Database db; + private int identity_id; + + public BackedSessionStore(Database db, int identity_id) { + this.db = db; + this.identity_id = identity_id; + init(); + } + + private void init() { + Address addr = new Address(); + foreach (Row row in db.session.select().with(db.session.identity_id, "=", identity_id)) { + addr.name = row[db.session.address_name]; + addr.device_id = row[db.session.device_id]; + store_session(addr, Base64.decode(row[db.session.record_base64])); + } + + session_stored.connect(on_session_stored); + session_removed.connect(on_session_deleted); + } + + public void on_session_stored(SessionStore.Session session) { + db.session.insert().or("REPLACE") + .value(db.session.identity_id, identity_id) + .value(db.session.address_name, session.name) + .value(db.session.device_id, session.device_id) + .value(db.session.record_base64, Base64.encode(session.record)) + .perform(); + } + + public void on_session_deleted(SessionStore.Session session) { + db.session.delete() + .with(db.session.identity_id, "=", identity_id) + .with(db.session.address_name, "=", session.name) + .with(db.session.device_id, "=", session.device_id) + .perform(); + } + } + + public bool con_encrypt(Entities.Conversation conversation) { + return true; // TODO + } + + 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); + } +} + +}
\ No newline at end of file |