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denoland-deno/runtime/ops/signal.rs
Geert-Jan Zwiers 24571a3952
feat(runtime/signal): implement SIGINT and SIGBREAK for windows (#14694) 
This commit adds support for SIGINT and SIGBREAK signals on 
Windows platform.

Co-authored-by: orange soeur <juzi201314@gmail.com>
2022-06-13 22:39:46 +02:00

524 lines
12 KiB
Rust
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// Copyright 2018-2022 the Deno authors. All rights reserved. MIT license.
use deno_core::error::type_error;
use deno_core::error::AnyError;
use deno_core::op;
use deno_core::AsyncRefCell;
use deno_core::CancelFuture;
use deno_core::CancelHandle;
use deno_core::Extension;
use deno_core::OpState;
use deno_core::RcRef;
use deno_core::Resource;
use deno_core::ResourceId;
use std::borrow::Cow;
use std::cell::RefCell;
use std::rc::Rc;
#[cfg(unix)]
use tokio::signal::unix::{signal, Signal, SignalKind};
#[cfg(windows)]
use tokio::signal::windows::{ctrl_break, ctrl_c, CtrlBreak, CtrlC};
pub fn init() -> Extension {
Extension::builder()
.ops(vec![
op_signal_bind::decl(),
op_signal_unbind::decl(),
op_signal_poll::decl(),
])
.build()
}
#[cfg(unix)]
/// The resource for signal stream.
/// The second element is the waker of polling future.
struct SignalStreamResource {
signal: AsyncRefCell<Signal>,
cancel: CancelHandle,
}
#[cfg(unix)]
impl Resource for SignalStreamResource {
fn name(&self) -> Cow<str> {
"signal".into()
}
fn close(self: Rc<Self>) {
self.cancel.cancel();
}
}
// TODO: CtrlClose could be mapped to SIGHUP but that needs a
// tokio::windows::signal::CtrlClose type, or something from a different crate
#[cfg(windows)]
enum WindowsSignal {
Sigint(CtrlC),
Sigbreak(CtrlBreak),
}
#[cfg(windows)]
impl From<CtrlC> for WindowsSignal {
fn from(ctrl_c: CtrlC) -> Self {
WindowsSignal::Sigint(ctrl_c)
}
}
#[cfg(windows)]
impl From<CtrlBreak> for WindowsSignal {
fn from(ctrl_break: CtrlBreak) -> Self {
WindowsSignal::Sigbreak(ctrl_break)
}
}
#[cfg(windows)]
impl WindowsSignal {
pub async fn recv(&mut self) -> Option<()> {
match self {
WindowsSignal::Sigint(ctrl_c) => ctrl_c.recv().await,
WindowsSignal::Sigbreak(ctrl_break) => ctrl_break.recv().await,
}
}
}
#[cfg(windows)]
struct SignalStreamResource {
signal: AsyncRefCell<WindowsSignal>,
cancel: CancelHandle,
}
#[cfg(windows)]
impl Resource for SignalStreamResource {
fn name(&self) -> Cow<str> {
"signal".into()
}
fn close(self: Rc<Self>) {
self.cancel.cancel();
}
}
#[cfg(target_os = "freebsd")]
pub fn signal_str_to_int(s: &str) -> Result<libc::c_int, AnyError> {
match s {
"SIGHUP" => Ok(1),
"SIGINT" => Ok(2),
"SIGQUIT" => Ok(3),
"SIGILL" => Ok(4),
"SIGTRAP" => Ok(5),
"SIGABRT" => Ok(6),
"SIGEMT" => Ok(7),
"SIGFPE" => Ok(8),
"SIGKILL" => Ok(9),
"SIGBUS" => Ok(10),
"SIGSEGV" => Ok(11),
"SIGSYS" => Ok(12),
"SIGPIPE" => Ok(13),
"SIGALRM" => Ok(14),
"SIGTERM" => Ok(15),
"SIGURG" => Ok(16),
"SIGSTOP" => Ok(17),
"SIGTSTP" => Ok(18),
"SIGCONT" => Ok(19),
"SIGCHLD" => Ok(20),
"SIGTTIN" => Ok(21),
"SIGTTOU" => Ok(22),
"SIGIO" => Ok(23),
"SIGXCPU" => Ok(24),
"SIGXFSZ" => Ok(25),
"SIGVTALRM" => Ok(26),
"SIGPROF" => Ok(27),
"SIGWINCH" => Ok(28),
"SIGINFO" => Ok(29),
"SIGUSR1" => Ok(30),
"SIGUSR2" => Ok(31),
"SIGTHR" => Ok(32),
"SIGLIBRT" => Ok(33),
_ => Err(type_error(format!("Invalid signal : {}", s))),
}
}
#[cfg(target_os = "freebsd")]
pub fn signal_int_to_str(s: libc::c_int) -> Result<&'static str, AnyError> {
match s {
1 => Ok("SIGHUP"),
2 => Ok("SIGINT"),
3 => Ok("SIGQUIT"),
4 => Ok("SIGILL"),
5 => Ok("SIGTRAP"),
6 => Ok("SIGABRT"),
7 => Ok("SIGEMT"),
8 => Ok("SIGFPE"),
9 => Ok("SIGKILL"),
10 => Ok("SIGBUS"),
11 => Ok("SIGSEGV"),
12 => Ok("SIGSYS"),
13 => Ok("SIGPIPE"),
14 => Ok("SIGALRM"),
15 => Ok("SIGTERM"),
16 => Ok("SIGURG"),
17 => Ok("SIGSTOP"),
18 => Ok("SIGTSTP"),
19 => Ok("SIGCONT"),
20 => Ok("SIGCHLD"),
21 => Ok("SIGTTIN"),
22 => Ok("SIGTTOU"),
23 => Ok("SIGIO"),
24 => Ok("SIGXCPU"),
25 => Ok("SIGXFSZ"),
26 => Ok("SIGVTALRM"),
27 => Ok("SIGPROF"),
28 => Ok("SIGWINCH"),
29 => Ok("SIGINFO"),
30 => Ok("SIGUSR1"),
31 => Ok("SIGUSR2"),
32 => Ok("SIGTHR"),
33 => Ok("SIGLIBRT"),
_ => Err(type_error(format!("Invalid signal : {}", s))),
}
}
#[cfg(any(target_os = "android", target_os = "linux"))]
pub fn signal_str_to_int(s: &str) -> Result<libc::c_int, AnyError> {
match s {
"SIGHUP" => Ok(1),
"SIGINT" => Ok(2),
"SIGQUIT" => Ok(3),
"SIGILL" => Ok(4),
"SIGTRAP" => Ok(5),
"SIGABRT" => Ok(6),
"SIGBUS" => Ok(7),
"SIGFPE" => Ok(8),
"SIGKILL" => Ok(9),
"SIGUSR1" => Ok(10),
"SIGSEGV" => Ok(11),
"SIGUSR2" => Ok(12),
"SIGPIPE" => Ok(13),
"SIGALRM" => Ok(14),
"SIGTERM" => Ok(15),
"SIGSTKFLT" => Ok(16),
"SIGCHLD" => Ok(17),
"SIGCONT" => Ok(18),
"SIGSTOP" => Ok(19),
"SIGTSTP" => Ok(20),
"SIGTTIN" => Ok(21),
"SIGTTOU" => Ok(22),
"SIGURG" => Ok(23),
"SIGXCPU" => Ok(24),
"SIGXFSZ" => Ok(25),
"SIGVTALRM" => Ok(26),
"SIGPROF" => Ok(27),
"SIGWINCH" => Ok(28),
"SIGIO" => Ok(29),
"SIGPWR" => Ok(30),
"SIGSYS" => Ok(31),
_ => Err(type_error(format!("Invalid signal : {}", s))),
}
}
#[cfg(any(target_os = "android", target_os = "linux"))]
pub fn signal_int_to_str(s: libc::c_int) -> Result<&'static str, AnyError> {
match s {
1 => Ok("SIGHUP"),
2 => Ok("SIGINT"),
3 => Ok("SIGQUIT"),
4 => Ok("SIGILL"),
5 => Ok("SIGTRAP"),
6 => Ok("SIGABRT"),
7 => Ok("SIGBUS"),
8 => Ok("SIGFPE"),
9 => Ok("SIGKILL"),
10 => Ok("SIGUSR1"),
11 => Ok("SIGSEGV"),
12 => Ok("SIGUSR2"),
13 => Ok("SIGPIPE"),
14 => Ok("SIGALRM"),
15 => Ok("SIGTERM"),
16 => Ok("SIGSTKFLT"),
17 => Ok("SIGCHLD"),
18 => Ok("SIGCONT"),
19 => Ok("SIGSTOP"),
20 => Ok("SIGTSTP"),
21 => Ok("SIGTTIN"),
22 => Ok("SIGTTOU"),
23 => Ok("SIGURG"),
24 => Ok("SIGXCPU"),
25 => Ok("SIGXFSZ"),
26 => Ok("SIGVTALRM"),
27 => Ok("SIGPROF"),
28 => Ok("SIGWINCH"),
29 => Ok("SIGIO"),
30 => Ok("SIGPWR"),
31 => Ok("SIGSYS"),
_ => Err(type_error(format!("Invalid signal : {}", s))),
}
}
#[cfg(target_os = "macos")]
pub fn signal_str_to_int(s: &str) -> Result<libc::c_int, AnyError> {
match s {
"SIGHUP" => Ok(1),
"SIGINT" => Ok(2),
"SIGQUIT" => Ok(3),
"SIGILL" => Ok(4),
"SIGTRAP" => Ok(5),
"SIGABRT" => Ok(6),
"SIGEMT" => Ok(7),
"SIGFPE" => Ok(8),
"SIGKILL" => Ok(9),
"SIGBUS" => Ok(10),
"SIGSEGV" => Ok(11),
"SIGSYS" => Ok(12),
"SIGPIPE" => Ok(13),
"SIGALRM" => Ok(14),
"SIGTERM" => Ok(15),
"SIGURG" => Ok(16),
"SIGSTOP" => Ok(17),
"SIGTSTP" => Ok(18),
"SIGCONT" => Ok(19),
"SIGCHLD" => Ok(20),
"SIGTTIN" => Ok(21),
"SIGTTOU" => Ok(22),
"SIGIO" => Ok(23),
"SIGXCPU" => Ok(24),
"SIGXFSZ" => Ok(25),
"SIGVTALRM" => Ok(26),
"SIGPROF" => Ok(27),
"SIGWINCH" => Ok(28),
"SIGINFO" => Ok(29),
"SIGUSR1" => Ok(30),
"SIGUSR2" => Ok(31),
_ => Err(type_error(format!("Invalid signal: {}", s))),
}
}
#[cfg(target_os = "macos")]
pub fn signal_int_to_str(s: libc::c_int) -> Result<&'static str, AnyError> {
match s {
1 => Ok("SIGHUP"),
2 => Ok("SIGINT"),
3 => Ok("SIGQUIT"),
4 => Ok("SIGILL"),
5 => Ok("SIGTRAP"),
6 => Ok("SIGABRT"),
7 => Ok("SIGEMT"),
8 => Ok("SIGFPE"),
9 => Ok("SIGKILL"),
10 => Ok("SIGBUS"),
11 => Ok("SIGSEGV"),
12 => Ok("SIGSYS"),
13 => Ok("SIGPIPE"),
14 => Ok("SIGALRM"),
15 => Ok("SIGTERM"),
16 => Ok("SIGURG"),
17 => Ok("SIGSTOP"),
18 => Ok("SIGTSTP"),
19 => Ok("SIGCONT"),
20 => Ok("SIGCHLD"),
21 => Ok("SIGTTIN"),
22 => Ok("SIGTTOU"),
23 => Ok("SIGIO"),
24 => Ok("SIGXCPU"),
25 => Ok("SIGXFSZ"),
26 => Ok("SIGVTALRM"),
27 => Ok("SIGPROF"),
28 => Ok("SIGWINCH"),
29 => Ok("SIGINFO"),
30 => Ok("SIGUSR1"),
31 => Ok("SIGUSR2"),
_ => Err(type_error(format!("Invalid signal: {}", s))),
}
}
#[cfg(any(target_os = "solaris", target_os = "illumos"))]
pub fn signal_str_to_int(s: &str) -> Result<libc::c_int, AnyError> {
match s {
"SIGHUP" => Ok(1),
"SIGINT" => Ok(2),
"SIGQUIT" => Ok(3),
"SIGILL" => Ok(4),
"SIGTRAP" => Ok(5),
"SIGIOT" => Ok(6),
"SIGABRT" => Ok(6),
"SIGEMT" => Ok(7),
"SIGFPE" => Ok(8),
"SIGKILL" => Ok(9),
"SIGBUS" => Ok(10),
"SIGSEGV" => Ok(11),
"SIGSYS" => Ok(12),
"SIGPIPE" => Ok(13),
"SIGALRM" => Ok(14),
"SIGTERM" => Ok(15),
"SIGUSR1" => Ok(16),
"SIGUSR2" => Ok(17),
"SIGCLD" => Ok(18),
"SIGCHLD" => Ok(18),
"SIGPWR" => Ok(19),
"SIGWINCH" => Ok(20),
"SIGURG" => Ok(21),
"SIGPOLL" => Ok(22),
"SIGIO" => Ok(22),
"SIGSTOP" => Ok(23),
"SIGTSTP" => Ok(24),
"SIGCONT" => Ok(25),
"SIGTTIN" => Ok(26),
"SIGTTOU" => Ok(27),
"SIGVTALRM" => Ok(28),
"SIGPROF" => Ok(29),
"SIGXCPU" => Ok(30),
"SIGXFSZ" => Ok(31),
"SIGWAITING" => Ok(32),
"SIGLWP" => Ok(33),
"SIGFREEZE" => Ok(34),
"SIGTHAW" => Ok(35),
"SIGCANCEL" => Ok(36),
"SIGLOST" => Ok(37),
"SIGXRES" => Ok(38),
"SIGJVM1" => Ok(39),
"SIGJVM2" => Ok(40),
_ => Err(type_error(format!("Invalid signal : {}", s))),
}
}
#[cfg(any(target_os = "solaris", target_os = "illumos"))]
pub fn signal_int_to_str(s: libc::c_int) -> Result<&'static str, AnyError> {
match s {
1 => Ok("SIGHUP"),
2 => Ok("SIGINT"),
3 => Ok("SIGQUIT"),
4 => Ok("SIGILL"),
5 => Ok("SIGTRAP"),
6 => Ok("SIGABRT"),
7 => Ok("SIGEMT"),
8 => Ok("SIGFPE"),
9 => Ok("SIGKILL"),
10 => Ok("SIGBUS"),
11 => Ok("SIGSEGV"),
12 => Ok("SIGSYS"),
13 => Ok("SIGPIPE"),
14 => Ok("SIGALRM"),
15 => Ok("SIGTERM"),
16 => Ok("SIGUSR1"),
17 => Ok("SIGUSR2"),
18 => Ok("SIGCHLD"),
19 => Ok("SIGPWR"),
20 => Ok("SIGWINCH"),
21 => Ok("SIGURG"),
22 => Ok("SIGPOLL"),
23 => Ok("SIGSTOP"),
24 => Ok("SIGTSTP"),
25 => Ok("SIGCONT"),
26 => Ok("SIGTTIN"),
27 => Ok("SIGTTOU"),
28 => Ok("SIGVTALRM"),
29 => Ok("SIGPROF"),
30 => Ok("SIGXCPU"),
31 => Ok("SIGXFSZ"),
32 => Ok("SIGWAITING"),
33 => Ok("SIGLWP"),
34 => Ok("SIGFREEZE"),
35 => Ok("SIGTHAW"),
36 => Ok("SIGCANCEL"),
37 => Ok("SIGLOST"),
38 => Ok("SIGXRES"),
39 => Ok("SIGJVM1"),
40 => Ok("SIGJVM2"),
_ => Err(type_error(format!("Invalid signal : {}", s))),
}
}
#[cfg(target_os = "windows")]
pub fn signal_str_to_int(s: &str) -> Result<libc::c_int, AnyError> {
match s {
"SIGINT" => Ok(2),
"SIGBREAK" => Ok(21),
_ => Err(type_error(
"Windows only supports ctrl-c (SIGINT) and ctrl-break (SIGBREAK).",
)),
}
}
#[cfg(target_os = "windows")]
pub fn signal_int_to_str(s: libc::c_int) -> Result<&'static str, AnyError> {
match s {
2 => Ok("SIGINT"),
21 => Ok("SIGBREAK"),
_ => Err(type_error(
"Windows only supports ctrl-c (SIGINT) and ctrl-break (SIGBREAK).",
)),
}
}
#[cfg(unix)]
#[op]
fn op_signal_bind(
state: &mut OpState,
sig: String,
) -> Result<ResourceId, AnyError> {
let signo = signal_str_to_int(&sig)?;
if signal_hook_registry::FORBIDDEN.contains(&signo) {
return Err(type_error(format!(
"Binding to signal '{}' is not allowed",
sig
)));
}
let resource = SignalStreamResource {
signal: AsyncRefCell::new(signal(SignalKind::from_raw(signo))?),
cancel: Default::default(),
};
let rid = state.resource_table.add(resource);
Ok(rid)
}
#[cfg(windows)]
#[op]
fn op_signal_bind(
state: &mut OpState,
sig: String,
) -> Result<ResourceId, AnyError> {
let signo = signal_str_to_int(&sig)?;
let resource = SignalStreamResource {
signal: AsyncRefCell::new(match signo {
// SIGINT
2 => ctrl_c()
.expect("There was an issue creating ctrl+c event stream.")
.into(),
// SIGBREAK
21 => ctrl_break()
.expect("There was an issue creating ctrl+break event stream.")
.into(),
_ => unimplemented!(),
}),
cancel: Default::default(),
};
let rid = state.resource_table.add(resource);
Ok(rid)
}
#[op]
async fn op_signal_poll(
state: Rc<RefCell<OpState>>,
rid: ResourceId,
) -> Result<bool, AnyError> {
let resource = state
.borrow_mut()
.resource_table
.get::<SignalStreamResource>(rid)?;
let cancel = RcRef::map(&resource, |r| &r.cancel);
let mut signal = RcRef::map(&resource, |r| &r.signal).borrow_mut().await;
match signal.recv().or_cancel(cancel).await {
Ok(result) => Ok(result.is_none()),
Err(_) => Ok(true),
}
}
#[op]
pub fn op_signal_unbind(
state: &mut OpState,
rid: ResourceId,
) -> Result<(), AnyError> {
state.resource_table.close(rid)?;
Ok(())
}
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