1 files changed, 46 insertions, 0 deletions
diff --git a/main/src/plugins/omemo/logic/pre_key_store.vala b/main/src/plugins/omemo/logic/pre_key_store.vala
new file mode 100644
index 00000000..968ec119
--- /dev/null
+++ b/main/src/plugins/omemo/logic/pre_key_store.vala
@@ -0,0 +1,46 @@
+using Dino.Crypto.Omemo;
+using Dino.Qlite;
+using Omemo;
+
+namespace Dino.Plugins.Omemo {
+
+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() {
+        try {
+            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]));
+            }
+        } catch (Error e) {
+            warning("Error while initializing pre key store: %s", e.message);
+        }
+
+        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.upsert()
+                .value(db.pre_key.identity_id, identity_id, true)
+                .value(db.pre_key.pre_key_id, (int) key.key_id, true)
+                .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();
+    }
+}
+
+}