mirror of
https://github.com/denoland/deno.git
synced 2024-10-29 08:58:01 -04:00
177 lines
4.5 KiB
Rust
177 lines
4.5 KiB
Rust
// Copyright 2018-2021 the Deno authors. All rights reserved. MIT license.
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use crate::io::UnixStreamResource;
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use crate::ops::AcceptArgs;
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use crate::ops::OpAddr;
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use crate::ops::OpConn;
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use crate::ops::OpPacket;
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use crate::ops::ReceiveArgs;
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use deno_core::error::bad_resource;
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use deno_core::error::custom_error;
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use deno_core::error::AnyError;
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use deno_core::AsyncRefCell;
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use deno_core::CancelHandle;
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use deno_core::CancelTryFuture;
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use deno_core::OpState;
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use deno_core::RcRef;
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use deno_core::Resource;
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use deno_core::ZeroCopyBuf;
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use serde::Deserialize;
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use serde::Serialize;
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use std::borrow::Cow;
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use std::cell::RefCell;
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use std::fs::remove_file;
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use std::path::Path;
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use std::rc::Rc;
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use tokio::net::UnixDatagram;
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use tokio::net::UnixListener;
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pub use tokio::net::UnixStream;
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/// A utility function to map OsStrings to Strings
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pub fn into_string(s: std::ffi::OsString) -> Result<String, AnyError> {
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s.into_string().map_err(|s| {
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let message = format!("File name or path {:?} is not valid UTF-8", s);
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custom_error("InvalidData", message)
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})
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}
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struct UnixListenerResource {
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listener: AsyncRefCell<UnixListener>,
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cancel: CancelHandle,
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}
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impl Resource for UnixListenerResource {
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fn name(&self) -> Cow<str> {
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"unixListener".into()
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}
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fn close(self: Rc<Self>) {
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self.cancel.cancel();
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}
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}
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pub struct UnixDatagramResource {
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pub socket: AsyncRefCell<UnixDatagram>,
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pub cancel: CancelHandle,
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}
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impl Resource for UnixDatagramResource {
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fn name(&self) -> Cow<str> {
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"unixDatagram".into()
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}
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fn close(self: Rc<Self>) {
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self.cancel.cancel();
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}
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}
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#[derive(Serialize)]
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pub struct UnixAddr {
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pub path: Option<String>,
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}
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#[derive(Deserialize)]
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pub struct UnixListenArgs {
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pub path: String,
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}
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pub(crate) async fn accept_unix(
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state: Rc<RefCell<OpState>>,
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args: AcceptArgs,
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_: (),
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) -> Result<OpConn, AnyError> {
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let rid = args.rid;
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let resource = state
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.borrow()
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.resource_table
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.get::<UnixListenerResource>(rid)
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.map_err(|_| bad_resource("Listener has been closed"))?;
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let listener = RcRef::map(&resource, |r| &r.listener)
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.try_borrow_mut()
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.ok_or_else(|| custom_error("Busy", "Listener already in use"))?;
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let cancel = RcRef::map(resource, |r| &r.cancel);
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let (unix_stream, _socket_addr) =
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listener.accept().try_or_cancel(cancel).await?;
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let local_addr = unix_stream.local_addr()?;
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let remote_addr = unix_stream.peer_addr()?;
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let resource = UnixStreamResource::new(unix_stream.into_split());
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let mut state = state.borrow_mut();
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let rid = state.resource_table.add(resource);
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Ok(OpConn {
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rid,
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local_addr: Some(OpAddr::Unix(UnixAddr {
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path: local_addr.as_pathname().and_then(pathstring),
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})),
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remote_addr: Some(OpAddr::Unix(UnixAddr {
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path: remote_addr.as_pathname().and_then(pathstring),
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})),
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})
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}
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pub(crate) async fn receive_unix_packet(
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state: Rc<RefCell<OpState>>,
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args: ReceiveArgs,
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mut buf: ZeroCopyBuf,
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) -> Result<OpPacket, AnyError> {
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let rid = args.rid;
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let resource = state
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.borrow()
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.resource_table
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.get::<UnixDatagramResource>(rid)
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.map_err(|_| bad_resource("Socket has been closed"))?;
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let socket = RcRef::map(&resource, |r| &r.socket)
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.try_borrow_mut()
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.ok_or_else(|| custom_error("Busy", "Socket already in use"))?;
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let cancel = RcRef::map(resource, |r| &r.cancel);
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let (size, remote_addr) =
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socket.recv_from(&mut buf).try_or_cancel(cancel).await?;
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Ok(OpPacket {
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size,
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remote_addr: OpAddr::UnixPacket(UnixAddr {
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path: remote_addr.as_pathname().and_then(pathstring),
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}),
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})
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}
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pub fn listen_unix(
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state: &mut OpState,
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addr: &Path,
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) -> Result<(u32, tokio::net::unix::SocketAddr), AnyError> {
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if addr.exists() {
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remove_file(&addr).unwrap();
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}
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let listener = UnixListener::bind(&addr)?;
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let local_addr = listener.local_addr()?;
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let listener_resource = UnixListenerResource {
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listener: AsyncRefCell::new(listener),
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cancel: Default::default(),
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};
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let rid = state.resource_table.add(listener_resource);
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Ok((rid, local_addr))
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}
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pub fn listen_unix_packet(
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state: &mut OpState,
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addr: &Path,
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) -> Result<(u32, tokio::net::unix::SocketAddr), AnyError> {
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if addr.exists() {
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remove_file(&addr).unwrap();
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}
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let socket = UnixDatagram::bind(&addr)?;
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let local_addr = socket.local_addr()?;
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let datagram_resource = UnixDatagramResource {
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socket: AsyncRefCell::new(socket),
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cancel: Default::default(),
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};
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let rid = state.resource_table.add(datagram_resource);
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Ok((rid, local_addr))
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}
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pub fn pathstring(pathname: &Path) -> Option<String> {
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into_string(pathname.into()).ok()
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}
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