1 files changed, 48 insertions, 0 deletions
diff --git a/main/src/plugins/omemo/logic/signed_pre_key_store.vala b/main/src/plugins/omemo/logic/signed_pre_key_store.vala
new file mode 100644
index 00000000..f4d57550
--- /dev/null
+++ b/main/src/plugins/omemo/logic/signed_pre_key_store.vala
@@ -0,0 +1,48 @@
+using Dino.Crypto.Omemo;
+using Dino.Qlite;
+using Omemo;
+
+namespace Dino.Plugins.Omemo {
+
+private class BackedSignedPreKeyStore : SignedPreKeyStore {
+    private Database db;
+    private int identity_id;
+
+    public BackedSignedPreKeyStore(Database db, int identity_id) {
+        this.db = db;
+        this.identity_id = identity_id;
+    }
+
+    public override uint8[]? load_signed_pre_key(uint32 pre_key_id) throws Crypto.Error {
+        RowOption row = db.signed_pre_key.select({db.signed_pre_key.record_base64})
+                .with(db.signed_pre_key.identity_id, "=", identity_id)
+                .with(db.signed_pre_key.signed_pre_key_id, "=", (int) pre_key_id)
+                .single().row();
+        if (!row.is_present()) return null;
+        return Base64.decode(row[db.signed_pre_key.record_base64]);
+    }
+
+    public override void store_signed_pre_key(uint32 pre_key_id, uint8[] record) throws Crypto.Error {
+        db.signed_pre_key.upsert()
+                .value(db.signed_pre_key.identity_id, identity_id, true)
+                .value(db.signed_pre_key.signed_pre_key_id, (int) pre_key_id, true)
+                .value(db.signed_pre_key.record_base64, Base64.encode(record))
+                .perform();
+    }
+
+    public override bool contains_signed_pre_key(uint32 pre_key_id) throws Crypto.Error {
+        return db.signed_pre_key.select({db.signed_pre_key.signed_pre_key_id})
+                .with(db.signed_pre_key.identity_id, "=", identity_id)
+                .with(db.signed_pre_key.signed_pre_key_id, "=", (int) pre_key_id)
+                .count() > 0;
+    }
+
+    public override void delete_signed_pre_key(uint32 pre_key_id) throws Crypto.Error {
+        db.signed_pre_key.delete()
+                .with(db.signed_pre_key.identity_id, "=", identity_id)
+                .with(db.signed_pre_key.signed_pre_key_id, "=", (int) pre_key_id)
+                .perform();
+    }
+}
+
+}