mirror of
https://github.com/denoland/deno.git
synced 2024-12-27 17:49:08 -05:00
540 lines
13 KiB
Rust
540 lines
13 KiB
Rust
// Copyright 2018-2022 the Deno authors. All rights reserved. MIT license.
|
|
|
|
use deno_core::error::AnyError;
|
|
use deno_core::op;
|
|
use deno_core::parking_lot::Mutex;
|
|
use deno_core::AsyncMutFuture;
|
|
use deno_core::AsyncRefCell;
|
|
use deno_core::AsyncResult;
|
|
use deno_core::CancelHandle;
|
|
use deno_core::CancelTryFuture;
|
|
use deno_core::Extension;
|
|
use deno_core::OpState;
|
|
use deno_core::RcRef;
|
|
use deno_core::Resource;
|
|
use deno_core::ResourceId;
|
|
use deno_core::ZeroCopyBuf;
|
|
use once_cell::sync::Lazy;
|
|
use std::borrow::Cow;
|
|
use std::cell::RefCell;
|
|
use std::fs::File as StdFile;
|
|
use std::io::ErrorKind;
|
|
use std::io::Read;
|
|
use std::io::Write;
|
|
use std::rc::Rc;
|
|
use std::sync::Arc;
|
|
use tokio::io::AsyncRead;
|
|
use tokio::io::AsyncReadExt;
|
|
use tokio::io::AsyncWrite;
|
|
use tokio::io::AsyncWriteExt;
|
|
use tokio::process;
|
|
|
|
#[cfg(unix)]
|
|
use std::os::unix::io::FromRawFd;
|
|
|
|
#[cfg(windows)]
|
|
use {
|
|
std::os::windows::io::FromRawHandle,
|
|
winapi::um::{processenv::GetStdHandle, winbase},
|
|
};
|
|
|
|
// Store the stdio fd/handles in global statics in order to keep them
|
|
// alive for the duration of the application since the last handle/fd
|
|
// being dropped will close the corresponding pipe.
|
|
#[cfg(unix)]
|
|
static STDIN_HANDLE: Lazy<StdFile> =
|
|
Lazy::new(|| unsafe { StdFile::from_raw_fd(0) });
|
|
#[cfg(unix)]
|
|
static STDOUT_HANDLE: Lazy<StdFile> =
|
|
Lazy::new(|| unsafe { StdFile::from_raw_fd(1) });
|
|
#[cfg(unix)]
|
|
static STDERR_HANDLE: Lazy<StdFile> =
|
|
Lazy::new(|| unsafe { StdFile::from_raw_fd(2) });
|
|
|
|
#[cfg(windows)]
|
|
static STDIN_HANDLE: Lazy<StdFile> = Lazy::new(|| unsafe {
|
|
StdFile::from_raw_handle(GetStdHandle(winbase::STD_INPUT_HANDLE))
|
|
});
|
|
#[cfg(windows)]
|
|
static STDOUT_HANDLE: Lazy<StdFile> = Lazy::new(|| unsafe {
|
|
StdFile::from_raw_handle(GetStdHandle(winbase::STD_OUTPUT_HANDLE))
|
|
});
|
|
#[cfg(windows)]
|
|
static STDERR_HANDLE: Lazy<StdFile> = Lazy::new(|| unsafe {
|
|
StdFile::from_raw_handle(GetStdHandle(winbase::STD_ERROR_HANDLE))
|
|
});
|
|
|
|
pub fn init() -> Extension {
|
|
Extension::builder()
|
|
.ops(vec![op_read_sync::decl(), op_write_sync::decl()])
|
|
.build()
|
|
}
|
|
|
|
pub enum StdioPipe {
|
|
Inherit,
|
|
File(StdFile),
|
|
}
|
|
|
|
impl Default for StdioPipe {
|
|
fn default() -> Self {
|
|
Self::Inherit
|
|
}
|
|
}
|
|
|
|
impl Clone for StdioPipe {
|
|
fn clone(&self) -> Self {
|
|
match self {
|
|
StdioPipe::Inherit => StdioPipe::Inherit,
|
|
StdioPipe::File(pipe) => StdioPipe::File(pipe.try_clone().unwrap()),
|
|
}
|
|
}
|
|
}
|
|
|
|
/// Specify how stdin, stdout, and stderr are piped.
|
|
/// By default, inherits from the process.
|
|
#[derive(Clone, Default)]
|
|
pub struct Stdio {
|
|
pub stdin: StdioPipe,
|
|
pub stdout: StdioPipe,
|
|
pub stderr: StdioPipe,
|
|
}
|
|
|
|
pub fn init_stdio(stdio: Stdio) -> Extension {
|
|
// todo(dsheret): don't do this? Taking out the writers was necessary to prevent invalid handle panics
|
|
let stdio = Rc::new(RefCell::new(Some(stdio)));
|
|
|
|
Extension::builder()
|
|
.middleware(|op| match op.name {
|
|
"op_print" => op_print::decl(),
|
|
_ => op,
|
|
})
|
|
.state(move |state| {
|
|
let stdio = stdio
|
|
.borrow_mut()
|
|
.take()
|
|
.expect("Extension only supports being used once.");
|
|
let t = &mut state.resource_table;
|
|
t.add(StdFileResource::stdio(
|
|
match stdio.stdin {
|
|
StdioPipe::Inherit => StdFileResourceInner::Stdin(Arc::new(
|
|
Mutex::new(STDIN_HANDLE.try_clone().unwrap()),
|
|
)),
|
|
StdioPipe::File(pipe) => StdFileResourceInner::file(pipe),
|
|
},
|
|
"stdin",
|
|
));
|
|
t.add(StdFileResource::stdio(
|
|
match stdio.stdout {
|
|
StdioPipe::Inherit => StdFileResourceInner::Stdout,
|
|
StdioPipe::File(pipe) => StdFileResourceInner::file(pipe),
|
|
},
|
|
"stdout",
|
|
));
|
|
t.add(StdFileResource::stdio(
|
|
match stdio.stderr {
|
|
StdioPipe::Inherit => StdFileResourceInner::Stderr,
|
|
StdioPipe::File(pipe) => StdFileResourceInner::file(pipe),
|
|
},
|
|
"stderr",
|
|
));
|
|
Ok(())
|
|
})
|
|
.build()
|
|
}
|
|
|
|
#[cfg(unix)]
|
|
use nix::sys::termios;
|
|
|
|
#[derive(Default)]
|
|
pub struct TtyMetadata {
|
|
#[cfg(unix)]
|
|
pub mode: Option<termios::Termios>,
|
|
}
|
|
|
|
#[derive(Default)]
|
|
pub struct FileMetadata {
|
|
pub tty: TtyMetadata,
|
|
}
|
|
|
|
#[derive(Debug)]
|
|
pub struct WriteOnlyResource<S> {
|
|
stream: AsyncRefCell<S>,
|
|
}
|
|
|
|
impl<S: 'static> From<S> for WriteOnlyResource<S> {
|
|
fn from(stream: S) -> Self {
|
|
Self {
|
|
stream: stream.into(),
|
|
}
|
|
}
|
|
}
|
|
|
|
impl<S> WriteOnlyResource<S>
|
|
where
|
|
S: AsyncWrite + Unpin + 'static,
|
|
{
|
|
pub fn borrow_mut(self: &Rc<Self>) -> AsyncMutFuture<S> {
|
|
RcRef::map(self, |r| &r.stream).borrow_mut()
|
|
}
|
|
|
|
async fn write(self: Rc<Self>, buf: ZeroCopyBuf) -> Result<usize, AnyError> {
|
|
let mut stream = self.borrow_mut().await;
|
|
let nwritten = stream.write(&buf).await?;
|
|
Ok(nwritten)
|
|
}
|
|
|
|
async fn shutdown(self: Rc<Self>) -> Result<(), AnyError> {
|
|
let mut stream = self.borrow_mut().await;
|
|
stream.shutdown().await?;
|
|
Ok(())
|
|
}
|
|
|
|
pub fn into_inner(self) -> S {
|
|
self.stream.into_inner()
|
|
}
|
|
}
|
|
|
|
#[derive(Debug)]
|
|
pub struct ReadOnlyResource<S> {
|
|
stream: AsyncRefCell<S>,
|
|
cancel_handle: CancelHandle,
|
|
}
|
|
|
|
impl<S: 'static> From<S> for ReadOnlyResource<S> {
|
|
fn from(stream: S) -> Self {
|
|
Self {
|
|
stream: stream.into(),
|
|
cancel_handle: Default::default(),
|
|
}
|
|
}
|
|
}
|
|
|
|
impl<S> ReadOnlyResource<S>
|
|
where
|
|
S: AsyncRead + Unpin + 'static,
|
|
{
|
|
pub fn borrow_mut(self: &Rc<Self>) -> AsyncMutFuture<S> {
|
|
RcRef::map(self, |r| &r.stream).borrow_mut()
|
|
}
|
|
|
|
pub fn cancel_handle(self: &Rc<Self>) -> RcRef<CancelHandle> {
|
|
RcRef::map(self, |r| &r.cancel_handle)
|
|
}
|
|
|
|
pub fn cancel_read_ops(&self) {
|
|
self.cancel_handle.cancel()
|
|
}
|
|
|
|
async fn read(
|
|
self: Rc<Self>,
|
|
mut buf: ZeroCopyBuf,
|
|
) -> Result<(usize, ZeroCopyBuf), AnyError> {
|
|
let mut rd = self.borrow_mut().await;
|
|
let nread = rd
|
|
.read(&mut buf)
|
|
.try_or_cancel(self.cancel_handle())
|
|
.await?;
|
|
Ok((nread, buf))
|
|
}
|
|
|
|
pub fn into_inner(self) -> S {
|
|
self.stream.into_inner()
|
|
}
|
|
}
|
|
|
|
pub type ChildStdinResource = WriteOnlyResource<process::ChildStdin>;
|
|
|
|
impl Resource for ChildStdinResource {
|
|
fn name(&self) -> Cow<str> {
|
|
"childStdin".into()
|
|
}
|
|
|
|
fn write(self: Rc<Self>, buf: ZeroCopyBuf) -> AsyncResult<usize> {
|
|
Box::pin(self.write(buf))
|
|
}
|
|
|
|
fn shutdown(self: Rc<Self>) -> AsyncResult<()> {
|
|
Box::pin(self.shutdown())
|
|
}
|
|
}
|
|
|
|
pub type ChildStdoutResource = ReadOnlyResource<process::ChildStdout>;
|
|
|
|
impl Resource for ChildStdoutResource {
|
|
fn name(&self) -> Cow<str> {
|
|
"childStdout".into()
|
|
}
|
|
|
|
fn read_return(
|
|
self: Rc<Self>,
|
|
buf: ZeroCopyBuf,
|
|
) -> AsyncResult<(usize, ZeroCopyBuf)> {
|
|
Box::pin(self.read(buf))
|
|
}
|
|
|
|
fn close(self: Rc<Self>) {
|
|
self.cancel_read_ops();
|
|
}
|
|
}
|
|
|
|
pub type ChildStderrResource = ReadOnlyResource<process::ChildStderr>;
|
|
|
|
impl Resource for ChildStderrResource {
|
|
fn name(&self) -> Cow<str> {
|
|
"childStderr".into()
|
|
}
|
|
|
|
fn read_return(
|
|
self: Rc<Self>,
|
|
buf: ZeroCopyBuf,
|
|
) -> AsyncResult<(usize, ZeroCopyBuf)> {
|
|
Box::pin(self.read(buf))
|
|
}
|
|
|
|
fn close(self: Rc<Self>) {
|
|
self.cancel_read_ops();
|
|
}
|
|
}
|
|
|
|
#[derive(Clone)]
|
|
enum StdFileResourceInner {
|
|
File(Arc<Mutex<StdFile>>),
|
|
Stdin(Arc<Mutex<StdFile>>),
|
|
// Ideally we would store stdio as an StdFile, but we get some Windows
|
|
// specific functionality for free by using Rust std's wrappers. So we
|
|
// take a bit of a complexity hit here in order to not have to duplicate
|
|
// the functionality in Rust's std/src/sys/windows/stdio.rs
|
|
Stdout,
|
|
Stderr,
|
|
}
|
|
|
|
impl StdFileResourceInner {
|
|
pub fn file(fs_file: StdFile) -> Self {
|
|
StdFileResourceInner::File(Arc::new(Mutex::new(fs_file)))
|
|
}
|
|
|
|
pub fn with_file<R>(&self, mut f: impl FnMut(&mut StdFile) -> R) -> R {
|
|
match self {
|
|
Self::File(file) | Self::Stdin(file) => {
|
|
let mut file = file.lock();
|
|
f(&mut file)
|
|
}
|
|
Self::Stdout => f(&mut STDOUT_HANDLE.try_clone().unwrap()),
|
|
Self::Stderr => f(&mut STDERR_HANDLE.try_clone().unwrap()),
|
|
}
|
|
}
|
|
|
|
pub fn write_and_maybe_flush(
|
|
&mut self,
|
|
buf: &[u8],
|
|
) -> Result<usize, AnyError> {
|
|
let nwritten = self.write(buf)?;
|
|
if !matches!(self, StdFileResourceInner::File(_)) {
|
|
// Rust will line buffer and we don't want that behavior
|
|
// (see https://github.com/denoland/deno/issues/948), so flush.
|
|
// Although an alternative solution could be to bypass Rust's std by
|
|
// using the raw fds/handles, it will cause encoding issues on Windows
|
|
// that we get solved for free by using Rust's stdio wrappers (see
|
|
// std/src/sys/windows/stdio.rs in Rust's source code).
|
|
self.flush()?;
|
|
}
|
|
Ok(nwritten)
|
|
}
|
|
}
|
|
|
|
impl Read for StdFileResourceInner {
|
|
fn read(&mut self, buf: &mut [u8]) -> std::io::Result<usize> {
|
|
match self {
|
|
Self::File(file) | Self::Stdin(file) => file.lock().read(buf),
|
|
Self::Stdout => Err(ErrorKind::Unsupported.into()),
|
|
Self::Stderr => Err(ErrorKind::Unsupported.into()),
|
|
}
|
|
}
|
|
}
|
|
|
|
impl Write for StdFileResourceInner {
|
|
fn write(&mut self, buf: &[u8]) -> std::io::Result<usize> {
|
|
match self {
|
|
Self::File(file) => file.lock().write(buf),
|
|
Self::Stdin(_) => Err(ErrorKind::Unsupported.into()),
|
|
Self::Stdout => std::io::stdout().write(buf),
|
|
Self::Stderr => std::io::stderr().write(buf),
|
|
}
|
|
}
|
|
|
|
fn flush(&mut self) -> std::io::Result<()> {
|
|
match self {
|
|
Self::File(file) => file.lock().flush(),
|
|
Self::Stdin(_) => Err(ErrorKind::Unsupported.into()),
|
|
Self::Stdout => std::io::stdout().flush(),
|
|
Self::Stderr => std::io::stderr().flush(),
|
|
}
|
|
}
|
|
}
|
|
|
|
pub struct StdFileResource {
|
|
inner: StdFileResourceInner,
|
|
metadata: RefCell<FileMetadata>,
|
|
name: String,
|
|
}
|
|
|
|
impl StdFileResource {
|
|
fn stdio(inner: StdFileResourceInner, name: &str) -> Self {
|
|
Self {
|
|
inner,
|
|
metadata: Default::default(),
|
|
name: name.to_string(),
|
|
}
|
|
}
|
|
|
|
pub fn fs_file(fs_file: StdFile) -> Self {
|
|
Self {
|
|
inner: StdFileResourceInner::file(fs_file),
|
|
metadata: Default::default(),
|
|
name: "fsFile".to_string(),
|
|
}
|
|
}
|
|
|
|
pub fn std_file(&self) -> Arc<Mutex<StdFile>> {
|
|
match &self.inner {
|
|
StdFileResourceInner::File(fs_file)
|
|
| StdFileResourceInner::Stdin(fs_file) => fs_file.clone(),
|
|
StdFileResourceInner::Stdout => {
|
|
Arc::new(Mutex::new(STDOUT_HANDLE.try_clone().unwrap()))
|
|
}
|
|
StdFileResourceInner::Stderr => {
|
|
Arc::new(Mutex::new(STDERR_HANDLE.try_clone().unwrap()))
|
|
}
|
|
}
|
|
}
|
|
|
|
pub fn metadata_mut(&self) -> std::cell::RefMut<FileMetadata> {
|
|
self.metadata.borrow_mut()
|
|
}
|
|
|
|
async fn read(
|
|
self: Rc<Self>,
|
|
mut buf: ZeroCopyBuf,
|
|
) -> Result<(usize, ZeroCopyBuf), AnyError> {
|
|
let mut inner = self.inner.clone();
|
|
tokio::task::spawn_blocking(
|
|
move || -> Result<(usize, ZeroCopyBuf), AnyError> {
|
|
Ok((inner.read(&mut buf)?, buf))
|
|
},
|
|
)
|
|
.await?
|
|
}
|
|
|
|
async fn write(self: Rc<Self>, buf: ZeroCopyBuf) -> Result<usize, AnyError> {
|
|
let mut inner = self.inner.clone();
|
|
tokio::task::spawn_blocking(move || inner.write_and_maybe_flush(&buf))
|
|
.await?
|
|
.map_err(AnyError::from)
|
|
}
|
|
|
|
fn with_inner<F, R>(
|
|
state: &mut OpState,
|
|
rid: ResourceId,
|
|
mut f: F,
|
|
) -> Result<R, AnyError>
|
|
where
|
|
F: FnMut(StdFileResourceInner) -> Result<R, AnyError>,
|
|
{
|
|
let resource = state.resource_table.get::<StdFileResource>(rid)?;
|
|
f(resource.inner.clone())
|
|
}
|
|
|
|
pub fn with_file<F, R>(
|
|
state: &mut OpState,
|
|
rid: ResourceId,
|
|
f: F,
|
|
) -> Result<R, AnyError>
|
|
where
|
|
F: FnMut(&mut StdFile) -> Result<R, AnyError>,
|
|
{
|
|
let resource = state.resource_table.get::<StdFileResource>(rid)?;
|
|
resource.inner.with_file(f)
|
|
}
|
|
|
|
pub fn clone_file(
|
|
state: &mut OpState,
|
|
rid: ResourceId,
|
|
) -> Result<StdFile, AnyError> {
|
|
Self::with_file(state, rid, move |std_file| {
|
|
std_file.try_clone().map_err(AnyError::from)
|
|
})
|
|
}
|
|
|
|
pub fn as_stdio(
|
|
state: &mut OpState,
|
|
rid: u32,
|
|
) -> Result<std::process::Stdio, AnyError> {
|
|
Self::with_inner(state, rid, |inner| match inner {
|
|
StdFileResourceInner::File(file) => {
|
|
let file = file.lock().try_clone()?;
|
|
Ok(file.into())
|
|
}
|
|
_ => Ok(std::process::Stdio::inherit()),
|
|
})
|
|
}
|
|
}
|
|
|
|
impl Resource for StdFileResource {
|
|
fn name(&self) -> Cow<str> {
|
|
self.name.as_str().into()
|
|
}
|
|
|
|
fn read_return(
|
|
self: Rc<Self>,
|
|
buf: ZeroCopyBuf,
|
|
) -> AsyncResult<(usize, ZeroCopyBuf)> {
|
|
Box::pin(self.read(buf))
|
|
}
|
|
|
|
fn write(self: Rc<Self>, buf: ZeroCopyBuf) -> AsyncResult<usize> {
|
|
Box::pin(self.write(buf))
|
|
}
|
|
}
|
|
|
|
// override op_print to use the stdout and stderr in the resource table
|
|
#[op]
|
|
pub fn op_print(
|
|
state: &mut OpState,
|
|
msg: String,
|
|
is_err: bool,
|
|
) -> Result<(), AnyError> {
|
|
let rid = if is_err { 2 } else { 1 };
|
|
StdFileResource::with_inner(state, rid, move |mut inner| {
|
|
inner.write_all(msg.as_bytes())?;
|
|
inner.flush().unwrap();
|
|
Ok(())
|
|
})
|
|
}
|
|
|
|
#[op]
|
|
fn op_read_sync(
|
|
state: &mut OpState,
|
|
rid: ResourceId,
|
|
mut buf: ZeroCopyBuf,
|
|
) -> Result<u32, AnyError> {
|
|
StdFileResource::with_inner(state, rid, move |mut inner| {
|
|
inner
|
|
.read(&mut buf)
|
|
.map(|n: usize| n as u32)
|
|
.map_err(AnyError::from)
|
|
})
|
|
}
|
|
|
|
#[op]
|
|
fn op_write_sync(
|
|
state: &mut OpState,
|
|
rid: ResourceId,
|
|
buf: ZeroCopyBuf,
|
|
) -> Result<u32, AnyError> {
|
|
StdFileResource::with_inner(state, rid, move |mut inner| {
|
|
inner
|
|
.write_and_maybe_flush(&buf)
|
|
.map(|nwritten: usize| nwritten as u32)
|
|
.map_err(AnyError::from)
|
|
})
|
|
}
|