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// Copyright 2018-2019 the Deno authors. All rights reserved. MIT license.
use super::dispatch_json::{Deserialize, JsonOp, Value};
use crate::resources;
use crate::signal::kill;
use crate::state::ThreadSafeState;
use deno::*;
use futures;
use futures::Future;
use std;
use std::convert::From;
use std::process::Command;
use tokio_process::CommandExt;
#[cfg(unix)]
use std::os::unix::process::ExitStatusExt;
fn subprocess_stdio_map(s: &str) -> std::process::Stdio {
match s {
"inherit" => std::process::Stdio::inherit(),
"piped" => std::process::Stdio::piped(),
"null" => std::process::Stdio::null(),
_ => unreachable!(),
}
}
#[derive(Deserialize)]
#[serde(rename_all = "camelCase")]
struct RunArgs {
args: Vec<String>,
cwd: Option<String>,
env: Vec<(String, String)>,
stdin: String,
stdout: String,
stderr: String,
stdin_rid: u32,
stdout_rid: u32,
stderr_rid: u32,
}
pub fn op_run(
state: &ThreadSafeState,
args: Value,
_zero_copy: Option<PinnedBuf>,
) -> Result<JsonOp, ErrBox> {
let run_args: RunArgs = serde_json::from_value(args)?;
state.check_run()?;
let args = run_args.args;
let env = run_args.env;
let cwd = run_args.cwd;
let mut c = Command::new(args.get(0).unwrap());
(1..args.len()).for_each(|i| {
let arg = args.get(i).unwrap();
c.arg(arg);
});
cwd.map(|d| c.current_dir(d));
for (key, value) in &env {
c.env(key, value);
}
// TODO: make this work with other resources, eg. sockets
let stdin_rid = run_args.stdin_rid;
if stdin_rid > 0 {
c.stdin(resources::get_file(stdin_rid)?);
} else {
c.stdin(subprocess_stdio_map(run_args.stdin.as_ref()));
}
let stdout_rid = run_args.stdout_rid;
if stdout_rid > 0 {
c.stdout(resources::get_file(stdout_rid)?);
} else {
c.stdout(subprocess_stdio_map(run_args.stdout.as_ref()));
}
let stderr_rid = run_args.stderr_rid;
if stderr_rid > 0 {
c.stderr(resources::get_file(stderr_rid)?);
} else {
c.stderr(subprocess_stdio_map(run_args.stderr.as_ref()));
}
// Spawn the command.
let child = c.spawn_async().map_err(ErrBox::from)?;
let pid = child.id();
let resources = resources::add_child(child);
Ok(JsonOp::Sync(json!({
"rid": resources.child_rid,
"pid": pid,
"stdinRid": resources.stdin_rid,
"stdoutRid": resources.stdout_rid,
"stderrRid": resources.stderr_rid,
})))
}
#[derive(Deserialize)]
#[serde(rename_all = "camelCase")]
struct RunStatusArgs {
rid: i32,
}
pub fn op_run_status(
state: &ThreadSafeState,
args: Value,
_zero_copy: Option<PinnedBuf>,
) -> Result<JsonOp, ErrBox> {
let args: RunStatusArgs = serde_json::from_value(args)?;
let rid = args.rid as u32;
state.check_run()?;
let future = resources::child_status(rid)?;
let future = future.and_then(move |run_status| {
let code = run_status.code();
#[cfg(unix)]
let signal = run_status.signal();
#[cfg(not(unix))]
let signal = None;
code
.or(signal)
.expect("Should have either an exit code or a signal.");
let got_signal = signal.is_some();
futures::future::ok(json!({
"gotSignal": got_signal,
"exitCode": code.unwrap_or(-1),
"exitSignal": signal.unwrap_or(-1),
}))
});
Ok(JsonOp::Async(Box::new(future)))
}
#[derive(Deserialize)]
struct KillArgs {
pid: i32,
signo: i32,
}
pub fn op_kill(
state: &ThreadSafeState,
args: Value,
_zero_copy: Option<PinnedBuf>,
) -> Result<JsonOp, ErrBox> {
state.check_run()?;
let args: KillArgs = serde_json::from_value(args)?;
kill(args.pid, args.signo)?;
Ok(JsonOp::Sync(json!({})))
}
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