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// Copyright 2018-2021 the Deno authors. All rights reserved. MIT license.
use crate::ops::io::StreamResource;
use crate::ops::net::AcceptArgs;
use crate::ops::net::ReceiveArgs;
use deno_core::error::bad_resource;
use deno_core::error::custom_error;
use deno_core::error::AnyError;
use deno_core::serde_json::json;
use deno_core::serde_json::Value;
use deno_core::AsyncRefCell;
use deno_core::BufVec;
use deno_core::CancelHandle;
use deno_core::CancelTryFuture;
use deno_core::OpState;
use deno_core::RcRef;
use deno_core::Resource;
use serde::Deserialize;
use std::borrow::Cow;
use std::cell::RefCell;
use std::fs::remove_file;
use std::os::unix;
use std::path::Path;
use std::rc::Rc;
use tokio::net::UnixDatagram;
use tokio::net::UnixListener;
pub use tokio::net::UnixStream;
struct UnixListenerResource {
listener: AsyncRefCell<UnixListener>,
cancel: CancelHandle,
}
impl Resource for UnixListenerResource {
fn name(&self) -> Cow<str> {
"unixListener".into()
}
fn close(self: Rc<Self>) {
self.cancel.cancel();
}
}
pub struct UnixDatagramResource {
pub socket: AsyncRefCell<UnixDatagram>,
pub cancel: CancelHandle,
}
impl Resource for UnixDatagramResource {
fn name(&self) -> Cow<str> {
"unixDatagram".into()
}
fn close(self: Rc<Self>) {
self.cancel.cancel();
}
}
#[derive(Deserialize)]
pub struct UnixListenArgs {
pub path: String,
}
pub(crate) async fn accept_unix(
state: Rc<RefCell<OpState>>,
args: AcceptArgs,
_bufs: BufVec,
) -> Result<Value, AnyError> {
let rid = args.rid as u32;
let resource = state
.borrow()
.resource_table
.get::<UnixListenerResource>(rid)
.ok_or_else(|| bad_resource("Listener has been closed"))?;
let mut listener = RcRef::map(&resource, |r| &r.listener)
.try_borrow_mut()
.ok_or_else(|| custom_error("Busy", "Listener already in use"))?;
let cancel = RcRef::map(resource, |r| &r.cancel);
let (unix_stream, _socket_addr) =
listener.accept().try_or_cancel(cancel).await?;
let local_addr = unix_stream.local_addr()?;
let remote_addr = unix_stream.peer_addr()?;
let resource = StreamResource::unix_stream(unix_stream);
let mut state = state.borrow_mut();
let rid = state.resource_table.add(resource);
Ok(json!({
"rid": rid,
"localAddr": {
"path": local_addr.as_pathname(),
"transport": "unix",
},
"remoteAddr": {
"path": remote_addr.as_pathname(),
"transport": "unix",
}
}))
}
pub(crate) async fn receive_unix_packet(
state: Rc<RefCell<OpState>>,
args: ReceiveArgs,
bufs: BufVec,
) -> Result<Value, AnyError> {
assert_eq!(bufs.len(), 1, "Invalid number of arguments");
let rid = args.rid as u32;
let mut buf = bufs.into_iter().next().unwrap();
let resource = state
.borrow()
.resource_table
.get::<UnixDatagramResource>(rid)
.ok_or_else(|| bad_resource("Socket has been closed"))?;
let mut socket = RcRef::map(&resource, |r| &r.socket)
.try_borrow_mut()
.ok_or_else(|| custom_error("Busy", "Socket already in use"))?;
let cancel = RcRef::map(resource, |r| &r.cancel);
let (size, remote_addr) =
socket.recv_from(&mut buf).try_or_cancel(cancel).await?;
Ok(json!({
"size": size,
"remoteAddr": {
"path": remote_addr.as_pathname(),
"transport": "unixpacket",
}
}))
}
pub fn listen_unix(
state: &mut OpState,
addr: &Path,
) -> Result<(u32, unix::net::SocketAddr), AnyError> {
if addr.exists() {
remove_file(&addr).unwrap();
}
let listener = UnixListener::bind(&addr)?;
let local_addr = listener.local_addr()?;
let listener_resource = UnixListenerResource {
listener: AsyncRefCell::new(listener),
cancel: Default::default(),
};
let rid = state.resource_table.add(listener_resource);
Ok((rid, local_addr))
}
pub fn listen_unix_packet(
state: &mut OpState,
addr: &Path,
) -> Result<(u32, unix::net::SocketAddr), AnyError> {
if addr.exists() {
remove_file(&addr).unwrap();
}
let socket = UnixDatagram::bind(&addr)?;
let local_addr = socket.local_addr()?;
let datagram_resource = UnixDatagramResource {
socket: AsyncRefCell::new(socket),
cancel: Default::default(),
};
let rid = state.resource_table.add(datagram_resource);
Ok((rid, local_addr))
}
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