Warn about undecrypted and untrusted messages
This commit is contained in:
fiaxh
parent
a6a92487d6
commit
c029da49bc
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@ -53,6 +53,7 @@ SOURCES
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src/ui/account_settings_entry.vala
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src/ui/account_settings_widget.vala
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src/ui/bad_messages_populator.vala
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src/ui/contact_details_provider.vala
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src/ui/contact_details_dialog.vala
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src/ui/device_notification_populator.vala
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@ -6,7 +6,7 @@ using Dino.Entities;
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namespace Dino.Plugins.Omemo {
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public class Database : Qlite.Database {
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private const int VERSION = 4;
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private const int VERSION = 5;
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public class IdentityMetaTable : Table {
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//Default to provide backwards compatability
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@ -18,10 +18,12 @@ public class Database : Qlite.Database {
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public Column<int> trust_level = new Column.Integer("trust_level") { default = TrustLevel.UNKNOWN.to_string(), min_version = 2 };
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public Column<bool> now_active = new Column.BoolInt("now_active") { default = "1" };
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public Column<long> last_active = new Column.Long("last_active");
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public Column<long> last_message_untrusted = new Column.Long("last_message_untrusted") { min_version = 5 };
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public Column<long> last_message_undecryptable = new Column.Long("last_message_undecryptable") { min_version = 5 };
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internal IdentityMetaTable(Database db) {
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base(db, "identity_meta");
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init({identity_id, address_name, device_id, identity_key_public_base64, trusted_identity, trust_level, now_active, last_active});
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init({identity_id, address_name, device_id, identity_key_public_base64, trusted_identity, trust_level, now_active, last_active, last_message_untrusted, last_message_undecryptable});
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index("identity_meta_idx", {identity_id, address_name, device_id}, true);
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index("identity_meta_list_idx", {identity_id, address_name});
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}
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@ -78,6 +80,30 @@ public class Database : Qlite.Database {
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.value(this.trust_level, trust).perform();
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}
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public void update_last_message_untrusted(int identity_id, int device_id, DateTime? time) {
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var stmt = update()
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.with(this.identity_id, "=", identity_id)
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.with(this.device_id, "=", device_id);
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if (time != null) {
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stmt.set(last_message_untrusted, (long)time.to_unix());
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} else {
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stmt.set_null(last_message_untrusted);
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}
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stmt.perform();
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}
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public void update_last_message_undecryptable(int identity_id, int device_id, DateTime? time) {
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var stmt = update()
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.with(this.identity_id, "=", identity_id)
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.with(this.device_id, "=", device_id);
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if (time != null) {
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stmt.set(last_message_undecryptable, (long)time.to_unix());
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} else {
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stmt.set_null(last_message_undecryptable);
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}
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stmt.perform();
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}
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public QueryBuilder get_trusted_devices(int identity_id, string address_name) {
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return this.with_address(identity_id, address_name)
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.with(this.trust_level, "!=", TrustLevel.UNTRUSTED)
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@ -8,6 +8,8 @@ namespace Dino.Plugins.Omemo {
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public class TrustManager {
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public signal void bad_message_state_updated(Account account, Jid jid, int device_id);
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private StreamInteractor stream_interactor;
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private Database db;
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private DecryptMessageListener decrypt_message_listener;
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@ -19,8 +21,8 @@ public class TrustManager {
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this.stream_interactor = stream_interactor;
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this.db = db;
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decrypt_message_listener = new DecryptMessageListener(stream_interactor, db, message_device_id_map);
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tag_message_listener = new TagMessageListener(stream_interactor, db, message_device_id_map);
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decrypt_message_listener = new DecryptMessageListener(stream_interactor, this, db, message_device_id_map);
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tag_message_listener = new TagMessageListener(stream_interactor, this, db, message_device_id_map);
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stream_interactor.get_module(MessageProcessor.IDENTITY).received_pipeline.connect(decrypt_message_listener);
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stream_interactor.get_module(MessageProcessor.IDENTITY).received_pipeline.connect(tag_message_listener);
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}
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@ -60,6 +62,11 @@ public class TrustManager {
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.where(selection, selection_args)
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.perform();
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}
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if (trust_level == TrustLevel.TRUSTED) {
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db.identity_meta.update_last_message_untrusted(identity_id, device_id, null);
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bad_message_state_updated(account, jid, device_id);
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}
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}
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private StanzaNode create_encrypted_key_node(uint8[] key, Address address, Store store) throws GLib.Error {
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@ -204,11 +211,13 @@ public class TrustManager {
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public override string[] after_actions { get { return after_actions_const; } }
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private StreamInteractor stream_interactor;
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private TrustManager trust_manager;
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private Database db;
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private HashMap<Message, int> message_device_id_map;
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public TagMessageListener(StreamInteractor stream_interactor, Database db, HashMap<Message, int> message_device_id_map) {
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public TagMessageListener(StreamInteractor stream_interactor, TrustManager trust_manager, Database db, HashMap<Message, int> message_device_id_map) {
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this.stream_interactor = stream_interactor;
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this.trust_manager = trust_manager;
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this.db = db;
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this.message_device_id_map = message_device_id_map;
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}
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@ -234,6 +243,8 @@ public class TrustManager {
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TrustLevel trust_level = (TrustLevel) db.identity_meta.get_device(identity_id, jid.bare_jid.to_string(), device_id)[db.identity_meta.trust_level];
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if (trust_level == TrustLevel.UNTRUSTED || trust_level == TrustLevel.UNKNOWN) {
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stream_interactor.get_module(ContentItemStore.IDENTITY).set_item_hide(content_item, true);
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db.identity_meta.update_last_message_untrusted(identity_id, device_id, message.time);
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trust_manager.bad_message_state_updated(conversation.account, jid, device_id);
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}
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db.content_item_meta.insert()
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@ -254,11 +265,13 @@ public class TrustManager {
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public override string[] after_actions { get { return after_actions_const; } }
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private StreamInteractor stream_interactor;
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private TrustManager trust_manager;
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private Database db;
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private HashMap<Message, int> message_device_id_map;
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public DecryptMessageListener(StreamInteractor stream_interactor, Database db, HashMap<Message, int> message_device_id_map) {
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public DecryptMessageListener(StreamInteractor stream_interactor, TrustManager trust_manager, Database db, HashMap<Message, int> message_device_id_map) {
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this.stream_interactor = stream_interactor;
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this.trust_manager = trust_manager;
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this.db = db;
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this.message_device_id_map = message_device_id_map;
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}
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@ -270,9 +283,6 @@ public class TrustManager {
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StanzaNode? _encrypted = stanza.stanza.get_subnode("encrypted", NS_URI);
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if (_encrypted == null || MessageFlag.get_flag(stanza) != null || stanza.from == null) return false;
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StanzaNode encrypted = (!)_encrypted;
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if (message.body == null && Xep.ExplicitEncryption.get_encryption_tag(stanza) == NS_URI) {
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message.body = "[This message is OMEMO encrypted]"; // TODO temporary
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};
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if (!Plugin.ensure_context()) return false;
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int identity_id = db.identity.get_id(conversation.account.id);
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MessageFlag flag = new MessageFlag();
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@ -282,118 +292,129 @@ public class TrustManager {
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StanzaNode header = (!)_header;
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int sid = header.get_attribute_int("sid");
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if (sid <= 0) return false;
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var our_nodes = new ArrayList<StanzaNode>();
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foreach (StanzaNode key_node in header.get_subnodes("key")) {
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debug("Is ours? %d =? %u", key_node.get_attribute_int("rid"), store.local_registration_id);
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if (key_node.get_attribute_int("rid") == store.local_registration_id) {
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string? payload = encrypted.get_deep_string_content("payload");
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string? iv_node = header.get_deep_string_content("iv");
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string? key_node_content = key_node.get_string_content();
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if (payload == null || iv_node == null || key_node_content == null) continue;
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uint8[] key;
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uint8[] ciphertext = Base64.decode((!)payload);
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uint8[] iv = Base64.decode((!)iv_node);
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Gee.List<Jid> possible_jids = new ArrayList<Jid>();
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if (conversation.type_ == Conversation.Type.CHAT) {
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possible_jids.add(stanza.from.bare_jid);
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} else {
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Jid? real_jid = message.real_jid;
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if (real_jid != null) {
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possible_jids.add(real_jid.bare_jid);
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} else if (key_node.get_attribute_bool("prekey")) {
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// pre key messages do store the identity key, so we can use that to find the real jid
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PreKeySignalMessage msg = Plugin.get_context().deserialize_pre_key_signal_message(Base64.decode((!)key_node_content));
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string identity_key = Base64.encode(msg.identity_key.serialize());
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foreach (Row row in db.identity_meta.get_with_device_id(identity_id, sid).with(db.identity_meta.identity_key_public_base64, "=", identity_key)) {
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try {
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possible_jids.add(new Jid(row[db.identity_meta.address_name]));
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} catch (InvalidJidError e) {
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warning("Ignoring invalid jid from database: %s", e.message);
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}
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}
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if (possible_jids.size != 1) {
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continue;
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}
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} else {
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// If we don't know the device name (MUC history w/o MAM), test decryption with all keys with fitting device id
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foreach (Row row in db.identity_meta.get_with_device_id(identity_id, sid)) {
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try {
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possible_jids.add(new Jid(row[db.identity_meta.address_name]));
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} catch (InvalidJidError e) {
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warning("Ignoring invalid jid from database: %s", e.message);
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}
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}
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}
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}
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if (possible_jids.size == 0) {
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debug("Received message from unknown entity with device id %d", sid);
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}
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foreach (Jid possible_jid in possible_jids) {
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try {
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Address address = new Address(possible_jid.to_string(), sid);
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if (key_node.get_attribute_bool("prekey")) {
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Row? device = db.identity_meta.get_device(identity_id, possible_jid.to_string(), sid);
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PreKeySignalMessage msg = Plugin.get_context().deserialize_pre_key_signal_message(Base64.decode((!)key_node_content));
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string identity_key = Base64.encode(msg.identity_key.serialize());
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if (device != null && device[db.identity_meta.identity_key_public_base64] != null) {
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if (device[db.identity_meta.identity_key_public_base64] != identity_key) {
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critical("Tried to use a different identity key for a known device id.");
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continue;
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}
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} else {
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debug("Learn new device from incoming message from %s/%d", possible_jid.to_string(), sid);
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bool blind_trust = db.trust.get_blind_trust(identity_id, possible_jid.to_string(), true);
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if (db.identity_meta.insert_device_session(identity_id, possible_jid.to_string(), sid, identity_key, blind_trust ? TrustLevel.TRUSTED : TrustLevel.UNKNOWN) < 0) {
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critical("Failed learning a device.");
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continue;
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}
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XmppStream? stream = stream_interactor.get_stream(conversation.account);
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if (device == null && stream != null) {
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module.request_user_devicelist.begin(stream, possible_jid);
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}
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}
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debug("Starting new session for decryption with device from %s/%d", possible_jid.to_string(), sid);
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SessionCipher cipher = store.create_session_cipher(address);
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key = cipher.decrypt_pre_key_signal_message(msg);
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// TODO: Finish session
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} else {
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debug("Continuing session for decryption with device from %s/%d", possible_jid.to_string(), sid);
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SignalMessage msg = Plugin.get_context().deserialize_signal_message(Base64.decode((!)key_node_content));
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SessionCipher cipher = store.create_session_cipher(address);
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key = cipher.decrypt_signal_message(msg);
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}
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//address.device_id = 0; // TODO: Hack to have address obj live longer
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if (key.length >= 32) {
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int authtaglength = key.length - 16;
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uint8[] new_ciphertext = new uint8[ciphertext.length + authtaglength];
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uint8[] new_key = new uint8[16];
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Memory.copy(new_ciphertext, ciphertext, ciphertext.length);
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Memory.copy((uint8*)new_ciphertext + ciphertext.length, (uint8*)key + 16, authtaglength);
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Memory.copy(new_key, key, 16);
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ciphertext = new_ciphertext;
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key = new_key;
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}
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message.body = arr_to_str(aes_decrypt(Cipher.AES_GCM_NOPADDING, key, iv, ciphertext));
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message_device_id_map[message] = address.device_id;
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message.encryption = Encryption.OMEMO;
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flag.decrypted = true;
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} catch (Error e) {
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debug("Decrypting message from %s/%d failed: %s", possible_jid.to_string(), sid, e.message);
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continue;
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}
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// If we figured out which real jid a message comes from due to decryption working, save it
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if (conversation.type_ == Conversation.Type.GROUPCHAT && message.real_jid == null) {
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message.real_jid = possible_jid;
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}
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return false;
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}
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our_nodes.add(key_node);
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}
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}
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foreach (StanzaNode key_node in our_nodes) {
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string? payload = encrypted.get_deep_string_content("payload");
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string? iv_node = header.get_deep_string_content("iv");
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string? key_node_content = key_node.get_string_content();
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if (payload == null || iv_node == null || key_node_content == null) continue;
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uint8[] key;
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uint8[] ciphertext = Base64.decode((!)payload);
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uint8[] iv = Base64.decode((!)iv_node);
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Gee.List<Jid> possible_jids = new ArrayList<Jid>();
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if (conversation.type_ == Conversation.Type.CHAT) {
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possible_jids.add(stanza.from.bare_jid);
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} else {
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Jid? real_jid = message.real_jid;
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if (real_jid != null) {
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possible_jids.add(real_jid.bare_jid);
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} else if (key_node.get_attribute_bool("prekey")) {
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// pre key messages do store the identity key, so we can use that to find the real jid
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PreKeySignalMessage msg = Plugin.get_context().deserialize_pre_key_signal_message(Base64.decode((!)key_node_content));
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string identity_key = Base64.encode(msg.identity_key.serialize());
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foreach (Row row in db.identity_meta.get_with_device_id(identity_id, sid).with(db.identity_meta.identity_key_public_base64, "=", identity_key)) {
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try {
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possible_jids.add(new Jid(row[db.identity_meta.address_name]));
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} catch (InvalidJidError e) {
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warning("Ignoring invalid jid from database: %s", e.message);
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}
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}
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if (possible_jids.size != 1) {
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continue;
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}
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} else {
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// If we don't know the device name (MUC history w/o MAM), test decryption with all keys with fitting device id
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foreach (Row row in db.identity_meta.get_with_device_id(identity_id, sid)) {
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try {
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possible_jids.add(new Jid(row[db.identity_meta.address_name]));
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} catch (InvalidJidError e) {
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warning("Ignoring invalid jid from database: %s", e.message);
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}
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}
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}
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}
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if (possible_jids.size == 0) {
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debug("Received message from unknown entity with device id %d", sid);
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}
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foreach (Jid possible_jid in possible_jids) {
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try {
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Address address = new Address(possible_jid.to_string(), sid);
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if (key_node.get_attribute_bool("prekey")) {
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Row? device = db.identity_meta.get_device(identity_id, possible_jid.to_string(), sid);
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PreKeySignalMessage msg = Plugin.get_context().deserialize_pre_key_signal_message(Base64.decode((!)key_node_content));
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string identity_key = Base64.encode(msg.identity_key.serialize());
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if (device != null && device[db.identity_meta.identity_key_public_base64] != null) {
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if (device[db.identity_meta.identity_key_public_base64] != identity_key) {
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critical("Tried to use a different identity key for a known device id.");
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continue;
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}
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} else {
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debug("Learn new device from incoming message from %s/%d", possible_jid.to_string(), sid);
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bool blind_trust = db.trust.get_blind_trust(identity_id, possible_jid.to_string(), true);
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if (db.identity_meta.insert_device_session(identity_id, possible_jid.to_string(), sid, identity_key, blind_trust ? TrustLevel.TRUSTED : TrustLevel.UNKNOWN) < 0) {
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critical("Failed learning a device.");
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continue;
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}
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XmppStream? stream = stream_interactor.get_stream(conversation.account);
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if (device == null && stream != null) {
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module.request_user_devicelist.begin(stream, possible_jid);
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}
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}
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debug("Starting new session for decryption with device from %s/%d", possible_jid.to_string(), sid);
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SessionCipher cipher = store.create_session_cipher(address);
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key = cipher.decrypt_pre_key_signal_message(msg);
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// TODO: Finish session
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} else {
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debug("Continuing session for decryption with device from %s/%d", possible_jid.to_string(), sid);
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SignalMessage msg = Plugin.get_context().deserialize_signal_message(Base64.decode((!)key_node_content));
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SessionCipher cipher = store.create_session_cipher(address);
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key = cipher.decrypt_signal_message(msg);
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}
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//address.device_id = 0; // TODO: Hack to have address obj live longer
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if (key.length >= 32) {
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int authtaglength = key.length - 16;
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uint8[] new_ciphertext = new uint8[ciphertext.length + authtaglength];
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uint8[] new_key = new uint8[16];
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Memory.copy(new_ciphertext, ciphertext, ciphertext.length);
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Memory.copy((uint8*)new_ciphertext + ciphertext.length, (uint8*)key + 16, authtaglength);
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Memory.copy(new_key, key, 16);
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ciphertext = new_ciphertext;
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key = new_key;
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}
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message.body = arr_to_str(aes_decrypt(Cipher.AES_GCM_NOPADDING, key, iv, ciphertext));
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message_device_id_map[message] = address.device_id;
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message.encryption = Encryption.OMEMO;
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flag.decrypted = true;
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} catch (Error e) {
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debug("Decrypting message from %s/%d failed: %s", possible_jid.to_string(), sid, e.message);
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continue;
|
||||
}
|
||||
|
||||
// If we figured out which real jid a message comes from due to decryption working, save it
|
||||
if (conversation.type_ == Conversation.Type.GROUPCHAT && message.real_jid == null) {
|
||||
message.real_jid = possible_jid;
|
||||
}
|
||||
return false;
|
||||
}
|
||||
}
|
||||
|
||||
if (our_nodes.size == 0) {
|
||||
db.identity_meta.update_last_message_undecryptable(identity_id, sid, message.time);
|
||||
trust_manager.bad_message_state_updated(conversation.account, message.from, sid);
|
||||
}
|
||||
|
||||
debug("Received OMEMO encryped message that could not be decrypted.");
|
||||
return false;
|
||||
}
|
||||
|
|
|
|||
|
|
@ -47,6 +47,7 @@ public class Plugin : RootInterface, Object {
|
|||
this.app.plugin_registry.register_account_settings_entry(settings_entry);
|
||||
this.app.plugin_registry.register_contact_details_entry(contact_details_provider);
|
||||
this.app.plugin_registry.register_notification_populator(device_notification_populator);
|
||||
this.app.plugin_registry.register_conversation_addition_populator(new BadMessagesPopulator(this.app.stream_interactor, this));
|
||||
this.app.stream_interactor.module_manager.initialize_account_modules.connect((account, list) => {
|
||||
list.add(new StreamModule());
|
||||
list.add(new JetOmemo.Module(this));
|
||||
|
|
|
|||
136
plugins/omemo/src/ui/bad_messages_populator.vala
Normal file
136
plugins/omemo/src/ui/bad_messages_populator.vala
Normal file
|
|
@ -0,0 +1,136 @@
|
|||
using Gee;
|
||||
using Gtk;
|
||||
using Qlite;
|
||||
|
||||
using Dino.Entities;
|
||||
using Xmpp;
|
||||
|
||||
namespace Dino.Plugins.Omemo {
|
||||
|
||||
public enum BadnessType {
|
||||
UNTRUSTED,
|
||||
UNDECRYPTABLE
|
||||
}
|
||||
|
||||
public class BadMessagesPopulator : Plugins.ConversationItemPopulator, Plugins.ConversationAdditionPopulator, Object {
|
||||
|
||||
public string id { get { return "bad_omemo_messages"; } }
|
||||
|
||||
private StreamInteractor stream_interactor;
|
||||
private Plugin plugin;
|
||||
private Database db;
|
||||
|
||||
private Conversation? current_conversation;
|
||||
private Plugins.ConversationItemCollection? item_collection;
|
||||
|
||||
private Gee.List<BadMessageItem> bad_items = new ArrayList<BadMessageItem>();
|
||||
|
||||
public BadMessagesPopulator(StreamInteractor stream_interactor, Plugin plugin) {
|
||||
this.stream_interactor = stream_interactor;
|
||||
this.plugin = plugin;
|
||||
this.db = plugin.db;
|
||||
|
||||
plugin.trust_manager.bad_message_state_updated.connect((account, jid, device_id) => {
|
||||
clear_state();
|
||||
init_state();
|
||||
});
|
||||
}
|
||||
|
||||
private void init_state() {
|
||||
var qry = db.identity_meta.select()
|
||||
.join_with(db.identity, db.identity.id, db.identity_meta.identity_id)
|
||||
.with(db.identity.account_id, "=", current_conversation.account.id)
|
||||
.with(db.identity_meta.address_name, "=", current_conversation.counterpart.to_string())
|
||||
.where("last_message_untrusted is not NULL OR last_message_undecryptable is not NULL");
|
||||
|
||||
foreach (Row row in qry) {
|
||||
Jid jid = new Jid(row[db.identity_meta.address_name]);
|
||||
if (!db.identity_meta.last_message_untrusted.is_null(row)) {
|
||||
DateTime time = new DateTime.from_unix_utc(row[db.identity_meta.last_message_untrusted]);
|
||||
var item = new BadMessageItem(plugin, current_conversation.account, jid, time, BadnessType.UNTRUSTED);
|
||||
bad_items.add(item);
|
||||
item_collection.insert_item(item);
|
||||
}
|
||||
if (!db.identity_meta.last_message_undecryptable.is_null(row)) {
|
||||
DateTime time = new DateTime.from_unix_utc(row[db.identity_meta.last_message_undecryptable]);
|
||||
var item = new BadMessageItem(plugin, current_conversation.account, jid, time, BadnessType.UNDECRYPTABLE);
|
||||
bad_items.add(item);
|
||||
item_collection.insert_item(item);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
private void clear_state() {
|
||||
foreach (BadMessageItem bad_item in bad_items) {
|
||||
item_collection.remove_item(bad_item);
|
||||
}
|
||||
}
|
||||
|
||||
public void init(Conversation conversation, Plugins.ConversationItemCollection item_collection, Plugins.WidgetType type) {
|
||||
current_conversation = conversation;
|
||||
this.item_collection = item_collection;
|
||||
|
||||
init_state();
|
||||
}
|
||||
|
||||
public void close(Conversation conversation) { }
|
||||
|
||||
public void populate_timespan(Conversation conversation, DateTime after, DateTime before) { }
|
||||
}
|
||||
|
||||
public class BadMessageItem : Plugins.MetaConversationItem {
|
||||
public override bool can_merge { get; set; default=false; }
|
||||
public override bool requires_avatar { get; set; default=false; }
|
||||
public override bool requires_header { get; set; default=false; }
|
||||
|
||||
private Plugin plugin;
|
||||
private Account account;
|
||||
private DateTime date;
|
||||
private Jid problem_jid;
|
||||
private BadnessType badness_type;
|
||||
|
||||
public BadMessageItem(Plugin plugin, Account account, Jid jid, DateTime date, BadnessType badness_type) {
|
||||
this.plugin = plugin;
|
||||
this.account = account;
|
||||
this.problem_jid = jid;
|
||||
this.date = date;
|
||||
this.sort_time = date;
|
||||
this.badness_type = badness_type;
|
||||
}
|
||||
|
||||
public override Object? get_widget(Plugins.WidgetType widget_type) {
|
||||
return new BadMessagesWidget(plugin, account, problem_jid, badness_type);
|
||||
}
|
||||
}
|
||||
|
||||
public class BadMessagesWidget : Box {
|
||||
public BadMessagesWidget(Plugin plugin, Account account, Jid jid, BadnessType badness_type) {
|
||||
Object(orientation:Orientation.HORIZONTAL, spacing:5);
|
||||
|
||||
this.halign = Align.CENTER;
|
||||
this.visible = true;
|
||||
|
||||
var sb = new StringBuilder();
|
||||
if (badness_type == BadnessType.UNTRUSTED) {
|
||||
sb.append("Your contact has been using an untrusted device. You won't see messages from devices that you do not trust.");
|
||||
sb.append(" <a href=\"\">%s</a>".printf(_("Manage devices")));
|
||||
} else {
|
||||
sb.append("Your contact does not trust this device. That means, you might be missing messages.");
|
||||
}
|
||||
Label label = new Label(sb.str) { margin_start=70, margin_end=70, justify=Justification.CENTER, use_markup=true, selectable=true, wrap=true, wrap_mode=Pango.WrapMode.WORD_CHAR, hexpand=true, visible=true };
|
||||
label.get_style_context().add_class("dim-label");
|
||||
this.add(label);
|
||||
|
||||
label.activate_link.connect(() => {
|
||||
if (badness_type == BadnessType.UNTRUSTED) {
|
||||
ContactDetailsDialog dialog = new ContactDetailsDialog(plugin, account, jid);
|
||||
dialog.set_transient_for((Window) get_toplevel());
|
||||
dialog.present();
|
||||
}
|
||||
|
||||
return false;
|
||||
});
|
||||
}
|
||||
}
|
||||
|
||||
}
|
||||
Loading…
Reference in a new issue