Implement estate and marketplace services (#73)

crates/libremetaverse/src/asset_manager.rs

@@ -150,6 +150,38 @@ impl std::fmt::Debug for AssetManager {
 }
 
 impl AssetManager {
+    pub(crate) fn native_stage_estate_upload(&self, data: Vec<u8>) -> Result<UUID, Error> {
+        if data.is_empty() || data.len() > crate::asset_models::MAX_ASSET_BYTES {
+            return Err(Error::Argument);
+        }
+        let id = UUID::random()?;
+        let upload = Arc::new(Mutex::new(UploadState {
+            asset_id: id,
+            data,
+            packet_num: 0,
+            transaction_id: id,
+            transferred: 0,
+            type_: AssetType::Unknown,
+            xfer_id: 0,
+            confirmation: None,
+        }));
+        let mut pending = mutex(&self.inner.pending_upload);
+        if pending.is_some() {
+            return Err(Error::InvalidOperation);
+        }
+        *pending = Some(upload);
+        Ok(id)
+    }
+
+    pub(crate) fn native_cancel_staged_estate_upload(&self, id: UUID) {
+        let mut pending = mutex(&self.inner.pending_upload);
+        if pending
+            .as_ref()
+            .is_some_and(|upload| mutex(upload).transaction_id == id)
+        {
+            pending.take();
+        }
+    }
     pub(crate) fn native_from_inner(inner: Arc<AssetManagerInner>) -> Result<Self, Error> {
         inner.client.upgrade().ok_or(Error::InvalidOperation)?;
         Ok(Self {