runtime_capabilities/fidl/
dictionary_router.rs

1// Copyright 2024 The Fuchsia Authors. All rights reserved.
2// Use of this source code is governed by a BSD-style license that can be
3// found in the LICENSE file.
4
5use crate::fidl::router;
6use crate::{ConversionError, Dictionary, Router, RouterResponse, WeakInstanceToken};
7use fidl::AsHandleRef;
8use fidl_fuchsia_component_sandbox as fsandbox;
9use fidl_fuchsia_io as fio;
10use futures::TryStreamExt;
11use std::sync::Arc;
12use vfs::directory::entry::DirectoryEntry;
13use vfs::execution_scope::ExecutionScope;
14
15impl crate::RemotableCapability for Router<Dictionary> {
16    fn try_into_directory_entry(
17        self,
18        scope: ExecutionScope,
19        token: WeakInstanceToken,
20    ) -> Result<Arc<dyn DirectoryEntry>, ConversionError> {
21        Ok(self.into_directory_entry(fio::DirentType::Directory, scope, token))
22    }
23}
24
25impl TryFrom<RouterResponse<Dictionary>> for fsandbox::DictionaryRouterRouteResponse {
26    type Error = fsandbox::RouterError;
27
28    fn try_from(resp: RouterResponse<Dictionary>) -> Result<Self, Self::Error> {
29        match resp {
30            RouterResponse::<Dictionary>::Capability(c) => {
31                Ok(fsandbox::DictionaryRouterRouteResponse::Dictionary(c.into()))
32            }
33            RouterResponse::<Dictionary>::Unavailable => {
34                Ok(fsandbox::DictionaryRouterRouteResponse::Unavailable(fsandbox::Unit {}))
35            }
36            RouterResponse::<Dictionary>::Debug(_) => Err(fsandbox::RouterError::NotSupported),
37        }
38    }
39}
40
41impl crate::fidl::IntoFsandboxCapability for Router<Dictionary> {
42    fn into_fsandbox_capability(self, token: WeakInstanceToken) -> fsandbox::Capability {
43        let (client_end, sender_stream) =
44            fidl::endpoints::create_request_stream::<fsandbox::DictionaryRouterMarker>();
45        self.serve_and_register(sender_stream, client_end.as_handle_ref().koid().unwrap(), token);
46        fsandbox::Capability::DictionaryRouter(client_end)
47    }
48}
49
50impl Router<Dictionary> {
51    async fn serve_router(
52        self,
53        mut stream: fsandbox::DictionaryRouterRequestStream,
54        token: WeakInstanceToken,
55    ) -> Result<(), fidl::Error> {
56        while let Ok(Some(request)) = stream.try_next().await {
57            match request {
58                fsandbox::DictionaryRouterRequest::Route { payload, responder } => {
59                    responder.send(router::route_from_fidl(&self, payload, token.clone()).await)?;
60                }
61                fsandbox::DictionaryRouterRequest::_UnknownMethod { ordinal, .. } => {
62                    log::warn!(
63                        ordinal:%; "Received unknown DictionaryRouter request"
64                    );
65                }
66            }
67        }
68        Ok(())
69    }
70
71    /// Serves the `fuchsia.sandbox.Router` protocol and moves ourself into the registry.
72    pub fn serve_and_register(
73        self,
74        stream: fsandbox::DictionaryRouterRequestStream,
75        koid: zx::Koid,
76        token: WeakInstanceToken,
77    ) {
78        let router = self.clone();
79
80        // Move this capability into the registry.
81        crate::fidl::registry::insert(self.into(), koid, async move {
82            router.serve_router(stream, token).await.expect("failed to serve Router");
83        });
84    }
85}
runtime_capabilities/fidl/dictionary_router.rs

runtime_capabilities/fidl/
dictionary_router.rs
