270 lines
12 KiB
Vala
270 lines
12 KiB
Vala
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using Dino.Entities;
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using Signal;
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using Qlite;
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using Xmpp;
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using Gee;
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namespace Dino.Omemo {
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public class Manager : StreamInteractionModule, Object {
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public const string id = "omemo_manager";
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private StreamInteractor stream_interactor;
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private Database db;
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private ArrayList<Entities.Message> to_send_after_devicelist = new ArrayList<Entities.Message>();
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private ArrayList<Entities.Message> to_send_after_session = new ArrayList<Entities.Message>();
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private Manager(StreamInteractor stream_interactor, Database db) {
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this.stream_interactor = stream_interactor;
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this.db = db;
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stream_interactor.account_added.connect(on_account_added);
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MessageManager.get_instance(stream_interactor).pre_message_received.connect(on_pre_message_received);
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MessageManager.get_instance(stream_interactor).pre_message_send.connect(on_pre_message_send);
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}
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private void on_pre_message_received(Entities.Message message, Xmpp.Message.Stanza message_stanza, Conversation conversation) {
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if (MessageFlag.get_flag(message_stanza) != null && MessageFlag.get_flag(message_stanza).decrypted) {
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message.encryption = Encryption.OMEMO;
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}
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}
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private void on_pre_message_send(Entities.Message message, Xmpp.Message.Stanza message_stanza, Conversation conversation) {
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if (message.encryption == Encryption.OMEMO) {
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Module module = Module.get_module(stream_interactor.get_stream(conversation.account));
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EncryptStatus status = module.encrypt(message_stanza, conversation.account.bare_jid.to_string());
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if (status.other_failure > 0 || (status.other_lost == status.other_devices && status.other_devices > 0)) {
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message.marked = Entities.Message.Marked.WONTSEND;
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} else if (status.other_unknown > 0 || status.own_devices == 0) {
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message.marked = Entities.Message.Marked.UNSENT;
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} else if (!status.encrypted) {
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message.marked = Entities.Message.Marked.WONTSEND;
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}
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if (status.other_unknown > 0) {
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bool cont = true;
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lock(to_send_after_session) {
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foreach(Entities.Message msg in to_send_after_session) {
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if (msg.counterpart.bare_jid.to_string() == message.counterpart.bare_jid.to_string()) cont = false;
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}
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to_send_after_session.add(message);
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}
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if (cont) module.start_sessions_with(stream_interactor.get_stream(conversation.account), message.counterpart.bare_jid.to_string());
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}
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if (status.own_unknown > 0) {
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module.start_sessions_with(stream_interactor.get_stream(conversation.account), conversation.account.bare_jid.to_string());
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}
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if (status.own_devices == 0) {
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lock (to_send_after_session) {
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to_send_after_devicelist.add(message);
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}
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}
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}
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}
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private void on_account_added(Account account) {
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stream_interactor.module_manager.get_module(account, Module.IDENTITY).store_created.connect((context, store) => on_store_created(account, context, store));
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stream_interactor.module_manager.get_module(account, Module.IDENTITY).device_list_loaded.connect(() => on_device_list_loaded(account));
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stream_interactor.module_manager.get_module(account, Module.IDENTITY).session_started.connect((jid, device_id) => on_session_started(account, jid));
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}
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private void on_session_started(Account account, string jid) {
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lock(to_send_after_session) {
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Iterator<Entities.Message> iter = to_send_after_session.iterator();
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while (iter.next()) {
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Entities.Message msg = iter.get();
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if (msg.account.bare_jid.to_string() == account.bare_jid.to_string() && msg.counterpart.bare_jid.to_string() == jid) {
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Entities.Conversation conv = ConversationManager.get_instance(stream_interactor).get_conversation(msg.counterpart, account);
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MessageManager.get_instance(stream_interactor).send_xmpp_message(msg, conv, true);
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iter.remove();
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}
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}
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}
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}
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private void on_device_list_loaded(Account account) {
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lock(to_send_after_devicelist) {
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Iterator<Entities.Message> iter = to_send_after_devicelist.iterator();
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while (iter.next()) {
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Entities.Message msg = iter.get();
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if (msg.account.bare_jid.to_string() == account.bare_jid.to_string()) {
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Entities.Conversation conv = ConversationManager.get_instance(stream_interactor).get_conversation(msg.counterpart, account);
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MessageManager.get_instance(stream_interactor).send_xmpp_message(msg, conv, true);
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iter.remove();
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}
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}
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}
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}
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private void on_store_created(Account account, Context context, Store store) {
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Qlite.Row? row = null;
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try {
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row = db.identity.row_with(db.identity.account_id, account.id);
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} catch (Error e) {
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// Ignore error
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}
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int identity_id = -1;
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if (row == null) {
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// OMEMO not yet initialized, starting with empty base
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store.identity_key_store.local_registration_id = Random.int_range(1, int32.MAX);
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Signal.ECKeyPair key_pair = context.generate_key_pair();
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store.identity_key_store.identity_key_private = key_pair.private.serialize();
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store.identity_key_store.identity_key_public = key_pair.public.serialize();
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try {
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identity_id = (int) db.identity.insert().or("REPLACE")
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.value(db.identity.account_id, account.id)
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.value(db.identity.device_id, (int) store.local_registration_id)
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.value(db.identity.identity_key_private_base64, Base64.encode(store.identity_key_store.identity_key_private))
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.value(db.identity.identity_key_public_base64, Base64.encode(store.identity_key_store.identity_key_public))
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.perform();
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} catch (Error e) {
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// Ignore error
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}
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} else {
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store.identity_key_store.local_registration_id = row[db.identity.device_id];
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store.identity_key_store.identity_key_private = Base64.decode(row[db.identity.identity_key_private_base64]);
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store.identity_key_store.identity_key_public = Base64.decode(row[db.identity.identity_key_public_base64]);
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identity_id = row[db.identity.id];
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}
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if (identity_id >= 0) {
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store.signed_pre_key_store = new BackedSignedPreKeyStore(db, identity_id);
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store.pre_key_store = new BackedPreKeyStore(db, identity_id);
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store.session_store = new BackedSessionStore(db, identity_id);
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} else {
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print(@"WARN: OMEMO store for $(account.bare_jid) is not persisted");
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}
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}
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private class BackedSignedPreKeyStore : SimpleSignedPreKeyStore {
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private Database db;
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private int identity_id;
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public BackedSignedPreKeyStore(Database db, int identity_id) {
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this.db = db;
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this.identity_id = identity_id;
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init();
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}
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private void init() {
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foreach (Row row in db.signed_pre_key.select().with(db.signed_pre_key.identity_id, "=", identity_id)) {
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store_signed_pre_key(row[db.signed_pre_key.signed_pre_key_id], Base64.decode(row[db.signed_pre_key.record_base64]));
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}
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signed_pre_key_stored.connect(on_signed_pre_key_stored);
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signed_pre_key_deleted.connect(on_signed_pre_key_deleted);
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}
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public void on_signed_pre_key_stored(SignedPreKeyStore.Key key) {
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db.signed_pre_key.insert().or("REPLACE")
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.value(db.signed_pre_key.identity_id, identity_id)
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.value(db.signed_pre_key.signed_pre_key_id, (int) key.key_id)
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.value(db.signed_pre_key.record_base64, Base64.encode(key.record))
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.perform();
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}
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public void on_signed_pre_key_deleted(SignedPreKeyStore.Key key) {
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db.signed_pre_key.delete()
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.with(db.signed_pre_key.identity_id, "=", identity_id)
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.with(db.signed_pre_key.signed_pre_key_id, "=", (int) key.key_id)
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.perform();
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}
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}
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private class BackedPreKeyStore : SimplePreKeyStore {
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private Database db;
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private int identity_id;
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public BackedPreKeyStore(Database db, int identity_id) {
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this.db = db;
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this.identity_id = identity_id;
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init();
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}
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private void init() {
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foreach (Row row in db.pre_key.select().with(db.pre_key.identity_id, "=", identity_id)) {
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store_pre_key(row[db.pre_key.pre_key_id], Base64.decode(row[db.pre_key.record_base64]));
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}
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pre_key_stored.connect(on_pre_key_stored);
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pre_key_deleted.connect(on_pre_key_deleted);
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}
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public void on_pre_key_stored(PreKeyStore.Key key) {
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db.pre_key.insert().or("REPLACE")
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.value(db.pre_key.identity_id, identity_id)
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.value(db.pre_key.pre_key_id, (int) key.key_id)
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.value(db.pre_key.record_base64, Base64.encode(key.record))
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.perform();
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}
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public void on_pre_key_deleted(PreKeyStore.Key key) {
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db.pre_key.delete()
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.with(db.pre_key.identity_id, "=", identity_id)
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.with(db.pre_key.pre_key_id, "=", (int) key.key_id)
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.perform();
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}
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}
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private class BackedSessionStore : SimpleSessionStore {
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private Database db;
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private int identity_id;
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public BackedSessionStore(Database db, int identity_id) {
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this.db = db;
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this.identity_id = identity_id;
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init();
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}
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private void init() {
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Address addr = new Address();
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foreach (Row row in db.session.select().with(db.session.identity_id, "=", identity_id)) {
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addr.name = row[db.session.address_name];
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addr.device_id = row[db.session.device_id];
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store_session(addr, Base64.decode(row[db.session.record_base64]));
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}
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session_stored.connect(on_session_stored);
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session_removed.connect(on_session_deleted);
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}
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public void on_session_stored(SessionStore.Session session) {
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db.session.insert().or("REPLACE")
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.value(db.session.identity_id, identity_id)
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.value(db.session.address_name, session.name)
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.value(db.session.device_id, session.device_id)
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.value(db.session.record_base64, Base64.encode(session.record))
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.perform();
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}
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public void on_session_deleted(SessionStore.Session session) {
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db.session.delete()
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.with(db.session.identity_id, "=", identity_id)
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.with(db.session.address_name, "=", session.name)
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.with(db.session.device_id, "=", session.device_id)
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.perform();
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}
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}
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public bool con_encrypt(Entities.Conversation conversation) {
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return true; // TODO
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}
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internal string get_id() {
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return id;
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}
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public static void start(StreamInteractor stream_interactor, Database db) {
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Manager m = new Manager(stream_interactor, db);
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stream_interactor.add_module(m);
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}
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public static Manager? get_instance(StreamInteractor stream_interactor) {
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return (Manager) stream_interactor.get_module(id);
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}
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}
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}
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