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denoland-deno/src/ops.rs

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// Copyright 2018-2019 the Deno authors. All rights reserved. MIT license.
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use crate::errors;
use crate::errors::{DenoError, DenoResult, ErrorKind};
use crate::fs as deno_fs;
use crate::http_util;
use crate::isolate::Buf;
use crate::isolate::Isolate;
use crate::isolate::IsolateState;
use crate::isolate::Op;
use crate::libdeno;
use crate::msg;
use crate::msg_util;
use crate::repl;
use crate::resolve_addr::resolve_addr;
use crate::resources;
use crate::resources::table_entries;
use crate::resources::Resource;
use crate::tokio_util;
use crate::version;
use flatbuffers::FlatBufferBuilder;
use futures;
use futures::Async;
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use futures::Poll;
use futures::Sink;
use futures::Stream;
use hyper;
use hyper::rt::Future;
use remove_dir_all::remove_dir_all;
use std;
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use std::convert::From;
use std::fs;
use std::net::Shutdown;
#[cfg(unix)]
use std::os::unix::fs::PermissionsExt;
#[cfg(unix)]
use std::os::unix::process::ExitStatusExt;
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use std::path::Path;
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use std::path::PathBuf;
use std::process::Command;
use std::sync::Arc;
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use std::time::UNIX_EPOCH;
use std::time::{Duration, Instant};
use tokio;
use tokio::net::TcpListener;
use tokio::net::TcpStream;
use tokio_process::CommandExt;
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use tokio_threadpool;
type OpResult = DenoResult<Buf>;
// TODO Ideally we wouldn't have to box the Op being returned.
// The box is just to make it easier to get a prototype refactor working.
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type OpCreator =
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fn(state: &Arc<IsolateState>, base: &msg::Base<'_>, data: libdeno::deno_buf)
-> Box<Op>;
#[inline]
fn empty_buf() -> Buf {
Box::new([])
}
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/// Processes raw messages from JavaScript.
/// This functions invoked every time libdeno.send() is called.
/// control corresponds to the first argument of libdeno.send().
/// data corresponds to the second argument of libdeno.send().
pub fn dispatch(
isolate: &Isolate,
control: libdeno::deno_buf,
data: libdeno::deno_buf,
) -> (bool, Box<Op>) {
let base = msg::get_root_as_base(&control);
let is_sync = base.sync();
let inner_type = base.inner_type();
let cmd_id = base.cmd_id();
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let op: Box<Op> = if inner_type == msg::Any::SetTimeout {
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// SetTimeout is an exceptional op: the global timeout field is part of the
// Isolate state (not the IsolateState state) and it must be updated on the
// main thread.
assert_eq!(is_sync, true);
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op_set_timeout(isolate, &base, data)
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} else {
// Handle regular ops.
let op_creator: OpCreator = match inner_type {
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msg::Any::Accept => op_accept,
msg::Any::Chdir => op_chdir,
msg::Any::Chmod => op_chmod,
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msg::Any::Close => op_close,
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msg::Any::CodeCache => op_code_cache,
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msg::Any::CodeFetch => op_code_fetch,
msg::Any::CopyFile => op_copy_file,
msg::Any::Cwd => op_cwd,
msg::Any::Dial => op_dial,
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msg::Any::Environ => op_env,
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msg::Any::Exit => op_exit,
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msg::Any::Fetch => op_fetch,
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msg::Any::Listen => op_listen,
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msg::Any::MakeTempDir => op_make_temp_dir,
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msg::Any::Metrics => op_metrics,
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msg::Any::Mkdir => op_mkdir,
msg::Any::Open => op_open,
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msg::Any::ReadDir => op_read_dir,
msg::Any::ReadFile => op_read_file,
msg::Any::Readlink => op_read_link,
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msg::Any::Read => op_read,
msg::Any::Remove => op_remove,
msg::Any::Rename => op_rename,
msg::Any::ReplReadline => op_repl_readline,
msg::Any::ReplStart => op_repl_start,
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msg::Any::Resources => op_resources,
msg::Any::Run => op_run,
msg::Any::RunStatus => op_run_status,
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msg::Any::SetEnv => op_set_env,
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msg::Any::Shutdown => op_shutdown,
msg::Any::Start => op_start,
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msg::Any::Stat => op_stat,
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msg::Any::Symlink => op_symlink,
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msg::Any::Truncate => op_truncate,
msg::Any::WorkerGetMessage => op_worker_get_message,
msg::Any::WorkerPostMessage => op_worker_post_message,
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msg::Any::Write => op_write,
msg::Any::WriteFile => op_write_file,
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_ => panic!(format!(
"Unhandled message {}",
msg::enum_name_any(inner_type)
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)),
};
op_creator(&isolate.state, &base, data)
};
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let boxed_op = Box::new(
op.or_else(move |err: DenoError| -> DenoResult<Buf> {
debug!("op err {}", err);
// No matter whether we got an Err or Ok, we want a serialized message to
// send back. So transform the DenoError into a deno_buf.
let builder = &mut FlatBufferBuilder::new();
let errmsg_offset = builder.create_string(&format!("{}", err));
Ok(serialize_response(
cmd_id,
builder,
msg::BaseArgs {
error: Some(errmsg_offset),
error_kind: err.kind(),
..Default::default()
},
))
}).and_then(move |buf: Buf| -> DenoResult<Buf> {
// Handle empty responses. For sync responses we just want
// to send null. For async we want to send a small message
// with the cmd_id.
let buf = if is_sync || buf.len() > 0 {
buf
} else {
let builder = &mut FlatBufferBuilder::new();
serialize_response(
cmd_id,
builder,
msg::BaseArgs {
..Default::default()
},
)
};
Ok(buf)
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}),
);
debug!(
"msg_from_js {} sync {}",
msg::enum_name_any(inner_type),
base.sync()
);
(base.sync(), boxed_op)
}
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fn op_exit(
_config: &Arc<IsolateState>,
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base: &msg::Base<'_>,
_data: libdeno::deno_buf,
) -> Box<Op> {
let inner = base.inner_as_exit().unwrap();
std::process::exit(inner.code())
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}
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fn op_start(
state: &Arc<IsolateState>,
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base: &msg::Base<'_>,
data: libdeno::deno_buf,
) -> Box<Op> {
assert_eq!(data.len(), 0);
let mut builder = FlatBufferBuilder::new();
let argv = state.argv.iter().map(|s| s.as_str()).collect::<Vec<_>>();
let argv_off = builder.create_vector_of_strings(argv.as_slice());
let cwd_path = std::env::current_dir().unwrap();
let cwd_off =
builder.create_string(deno_fs::normalize_path(cwd_path.as_ref()).as_ref());
let v8_version = version::v8();
let v8_version_off = builder.create_string(v8_version);
let deno_version = version::DENO;
let deno_version_off = builder.create_string(deno_version);
let inner = msg::StartRes::create(
&mut builder,
&msg::StartResArgs {
cwd: Some(cwd_off),
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pid: std::process::id(),
argv: Some(argv_off),
debug_flag: state.flags.log_debug,
recompile_flag: state.flags.recompile,
types_flag: state.flags.types,
version_flag: state.flags.version,
v8_version: Some(v8_version_off),
deno_version: Some(deno_version_off),
..Default::default()
},
);
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ok_future(serialize_response(
base.cmd_id(),
&mut builder,
msg::BaseArgs {
inner_type: msg::Any::StartRes,
inner: Some(inner.as_union_value()),
..Default::default()
},
))
}
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fn serialize_response(
cmd_id: u32,
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builder: &mut FlatBufferBuilder<'_>,
mut args: msg::BaseArgs<'_>,
) -> Buf {
args.cmd_id = cmd_id;
let base = msg::Base::create(builder, &args);
msg::finish_base_buffer(builder, base);
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let data = builder.finished_data();
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// println!("serialize_response {:x?}", data);
data.into()
}
#[inline]
pub fn ok_future(buf: Buf) -> Box<Op> {
Box::new(futures::future::ok(buf))
}
// Shout out to Earl Sweatshirt.
#[inline]
pub fn odd_future(err: DenoError) -> Box<Op> {
Box::new(futures::future::err(err))
}
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// https://github.com/denoland/deno/blob/golang/os.go#L100-L154
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fn op_code_fetch(
state: &Arc<IsolateState>,
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base: &msg::Base<'_>,
data: libdeno::deno_buf,
) -> Box<Op> {
assert_eq!(data.len(), 0);
let inner = base.inner_as_code_fetch().unwrap();
let cmd_id = base.cmd_id();
let specifier = inner.specifier().unwrap();
let referrer = inner.referrer().unwrap();
assert_eq!(state.dir.root.join("gen"), state.dir.gen, "Sanity check");
Box::new(futures::future::result(|| -> OpResult {
let builder = &mut FlatBufferBuilder::new();
let out = state.dir.code_fetch(specifier, referrer)?;
let mut msg_args = msg::CodeFetchResArgs {
module_name: Some(builder.create_string(&out.module_name)),
filename: Some(builder.create_string(&out.filename)),
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media_type: out.media_type,
source_code: Some(builder.create_string(&out.source_code)),
..Default::default()
};
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if let Some(ref output_code) = out.maybe_output_code {
msg_args.output_code = Some(builder.create_string(output_code));
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}
if let Some(ref source_map) = out.maybe_source_map {
msg_args.source_map = Some(builder.create_string(source_map));
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}
let inner = msg::CodeFetchRes::create(builder, &msg_args);
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Ok(serialize_response(
cmd_id,
builder,
msg::BaseArgs {
inner: Some(inner.as_union_value()),
inner_type: msg::Any::CodeFetchRes,
..Default::default()
},
))
}()))
}
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// https://github.com/denoland/deno/blob/golang/os.go#L156-L169
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fn op_code_cache(
state: &Arc<IsolateState>,
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base: &msg::Base<'_>,
data: libdeno::deno_buf,
) -> Box<Op> {
assert_eq!(data.len(), 0);
let inner = base.inner_as_code_cache().unwrap();
let filename = inner.filename().unwrap();
let source_code = inner.source_code().unwrap();
let output_code = inner.output_code().unwrap();
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let source_map = inner.source_map().unwrap();
Box::new(futures::future::result(|| -> OpResult {
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state
.dir
.code_cache(filename, source_code, output_code, source_map)?;
Ok(empty_buf())
}()))
}
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fn op_chdir(
_state: &Arc<IsolateState>,
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base: &msg::Base<'_>,
data: libdeno::deno_buf,
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) -> Box<Op> {
assert_eq!(data.len(), 0);
let inner = base.inner_as_chdir().unwrap();
let directory = inner.directory().unwrap();
Box::new(futures::future::result(|| -> OpResult {
std::env::set_current_dir(&directory)?;
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Ok(empty_buf())
}()))
}
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fn op_set_timeout(
isolate: &Isolate,
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base: &msg::Base<'_>,
data: libdeno::deno_buf,
) -> Box<Op> {
assert_eq!(data.len(), 0);
let inner = base.inner_as_set_timeout().unwrap();
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// FIXME why is timeout a double if it's cast immediately to i64/u64??
let val = inner.timeout() as i64;
let timeout_due = if val >= 0 {
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Some(Instant::now() + Duration::from_millis(val as u64))
} else {
None
};
isolate.set_timeout_due(timeout_due);
ok_future(empty_buf())
}
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fn op_set_env(
state: &Arc<IsolateState>,
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base: &msg::Base<'_>,
data: libdeno::deno_buf,
) -> Box<Op> {
assert_eq!(data.len(), 0);
let inner = base.inner_as_set_env().unwrap();
let key = inner.key().unwrap();
let value = inner.value().unwrap();
if let Err(e) = state.check_env() {
return odd_future(e);
}
std::env::set_var(key, value);
ok_future(empty_buf())
}
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fn op_env(
state: &Arc<IsolateState>,
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base: &msg::Base<'_>,
data: libdeno::deno_buf,
) -> Box<Op> {
assert_eq!(data.len(), 0);
let cmd_id = base.cmd_id();
if let Err(e) = state.check_env() {
return odd_future(e);
}
let builder = &mut FlatBufferBuilder::new();
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let vars: Vec<_> = std::env::vars()
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.map(|(key, value)| msg_util::serialize_key_value(builder, &key, &value))
.collect();
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let tables = builder.create_vector(&vars);
let inner = msg::EnvironRes::create(
builder,
&msg::EnvironResArgs { map: Some(tables) },
);
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ok_future(serialize_response(
cmd_id,
builder,
msg::BaseArgs {
inner: Some(inner.as_union_value()),
inner_type: msg::Any::EnvironRes,
..Default::default()
},
))
}
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fn op_fetch(
state: &Arc<IsolateState>,
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base: &msg::Base<'_>,
data: libdeno::deno_buf,
) -> Box<Op> {
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let inner = base.inner_as_fetch().unwrap();
let cmd_id = base.cmd_id();
let header = inner.header().unwrap();
assert!(header.is_request());
let url = header.url().unwrap();
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let body = if data.is_empty() {
hyper::Body::empty()
} else {
hyper::Body::from(Vec::from(&*data))
};
let maybe_req = msg_util::deserialize_request(header, body);
if let Err(e) = maybe_req {
return odd_future(e);
}
let req = maybe_req.unwrap();
if let Err(e) = state.check_net(url) {
return odd_future(e);
}
let client = http_util::get_client();
debug!("Before fetch {}", url);
let future =
client
.request(req)
.map_err(DenoError::from)
.and_then(move |res| {
let builder = &mut FlatBufferBuilder::new();
let header_off = msg_util::serialize_http_response(builder, &res);
let body = res.into_body();
let body_resource = resources::add_hyper_body(body);
let inner = msg::FetchRes::create(
builder,
&msg::FetchResArgs {
header: Some(header_off),
body_rid: body_resource.rid,
},
);
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Ok(serialize_response(
cmd_id,
builder,
msg::BaseArgs {
inner: Some(inner.as_union_value()),
inner_type: msg::Any::FetchRes,
..Default::default()
},
))
});
Box::new(future)
}
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// This is just type conversion. Implement From trait?
// See https://github.com/tokio-rs/tokio/blob/ffd73a64e7ec497622b7f939e38017afe7124dc4/tokio-fs/src/lib.rs#L76-L85
fn convert_blocking<F>(f: F) -> Poll<Buf, DenoError>
where
F: FnOnce() -> DenoResult<Buf>,
{
use futures::Async::*;
match tokio_threadpool::blocking(f) {
Ok(Ready(Ok(v))) => Ok(v.into()),
Ok(Ready(Err(err))) => Err(err),
Ok(NotReady) => Ok(NotReady),
Err(_err) => panic!("blocking error"),
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}
}
fn blocking<F>(is_sync: bool, f: F) -> Box<Op>
where
F: 'static + Send + FnOnce() -> DenoResult<Buf>,
{
if is_sync {
Box::new(futures::future::result(f()))
} else {
Box::new(tokio_util::poll_fn(move || convert_blocking(f)))
}
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}
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fn op_make_temp_dir(
state: &Arc<IsolateState>,
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base: &msg::Base<'_>,
data: libdeno::deno_buf,
) -> Box<Op> {
assert_eq!(data.len(), 0);
let base = Box::new(*base);
let inner = base.inner_as_make_temp_dir().unwrap();
let cmd_id = base.cmd_id();
// FIXME
if let Err(e) = state.check_write("make_temp") {
return odd_future(e);
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}
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let dir = inner.dir().map(PathBuf::from);
let prefix = inner.prefix().map(String::from);
let suffix = inner.suffix().map(String::from);
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blocking(base.sync(), move || -> OpResult {
// TODO(piscisaureus): use byte vector for paths, not a string.
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// See https://github.com/denoland/deno/issues/627.
// We can't assume that paths are always valid utf8 strings.
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let path = deno_fs::make_temp_dir(
// Converting Option<String> to Option<&str>
dir.as_ref().map(|x| &**x),
prefix.as_ref().map(|x| &**x),
suffix.as_ref().map(|x| &**x),
)?;
let builder = &mut FlatBufferBuilder::new();
let path_off = builder.create_string(path.to_str().unwrap());
let inner = msg::MakeTempDirRes::create(
builder,
&msg::MakeTempDirResArgs {
path: Some(path_off),
},
);
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Ok(serialize_response(
cmd_id,
builder,
msg::BaseArgs {
inner: Some(inner.as_union_value()),
inner_type: msg::Any::MakeTempDirRes,
..Default::default()
},
))
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})
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}
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fn op_mkdir(
state: &Arc<IsolateState>,
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base: &msg::Base<'_>,
data: libdeno::deno_buf,
) -> Box<Op> {
assert_eq!(data.len(), 0);
let inner = base.inner_as_mkdir().unwrap();
let path = String::from(inner.path().unwrap());
let recursive = inner.recursive();
let mode = inner.mode();
if let Err(e) = state.check_write(&path) {
return odd_future(e);
}
blocking(base.sync(), move || {
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debug!("op_mkdir {}", path);
deno_fs::mkdir(Path::new(&path), mode, recursive)?;
Ok(empty_buf())
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})
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}
fn op_chmod(
state: &Arc<IsolateState>,
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base: &msg::Base<'_>,
data: libdeno::deno_buf,
) -> Box<Op> {
assert_eq!(data.len(), 0);
let inner = base.inner_as_chmod().unwrap();
let _mode = inner.mode();
let path = String::from(inner.path().unwrap());
if let Err(e) = state.check_write(&path) {
return odd_future(e);
}
blocking(base.sync(), move || {
debug!("op_chmod {}", &path);
let path = PathBuf::from(&path);
// Still check file/dir exists on windows
let _metadata = fs::metadata(&path)?;
// Only work in unix
#[cfg(any(unix))]
{
// We need to use underscore to compile in Windows.
#[cfg_attr(feature = "cargo-clippy", allow(used_underscore_binding))]
let mut permissions = _metadata.permissions();
#[cfg_attr(feature = "cargo-clippy", allow(used_underscore_binding))]
permissions.set_mode(_mode);
fs::set_permissions(&path, permissions)?;
}
Ok(empty_buf())
})
}
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fn op_open(
state: &Arc<IsolateState>,
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base: &msg::Base<'_>,
data: libdeno::deno_buf,
) -> Box<Op> {
assert_eq!(data.len(), 0);
let cmd_id = base.cmd_id();
let inner = base.inner_as_open().unwrap();
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let filename_str = inner.filename().unwrap();
let filename = PathBuf::from(&filename_str);
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let mode = inner.mode().unwrap();
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let mut open_options = tokio::fs::OpenOptions::new();
match mode {
"r" => {
open_options.read(true);
}
"r+" => {
open_options.read(true).write(true);
}
"w" => {
open_options.create(true).write(true).truncate(true);
}
"w+" => {
open_options
.read(true)
.create(true)
.write(true)
.truncate(true);
}
"a" => {
open_options.create(true).append(true);
}
"a+" => {
open_options.read(true).create(true).append(true);
}
"x" => {
open_options.create_new(true).write(true);
}
"x+" => {
open_options.create_new(true).read(true).write(true);
}
&_ => {
panic!("Unknown file open mode.");
}
}
if mode != "r" {
// Write permission is needed except "r" mode
if let Err(e) = state.check_write(&filename_str) {
return odd_future(e);
}
}
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let op = open_options
.open(filename)
.map_err(DenoError::from)
.and_then(move |fs_file| -> OpResult {
let resource = resources::add_fs_file(fs_file);
let builder = &mut FlatBufferBuilder::new();
let inner =
msg::OpenRes::create(builder, &msg::OpenResArgs { rid: resource.rid });
Ok(serialize_response(
cmd_id,
builder,
msg::BaseArgs {
inner: Some(inner.as_union_value()),
inner_type: msg::Any::OpenRes,
..Default::default()
},
))
});
Box::new(op)
}
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fn op_close(
_state: &Arc<IsolateState>,
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base: &msg::Base<'_>,
data: libdeno::deno_buf,
) -> Box<Op> {
assert_eq!(data.len(), 0);
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let inner = base.inner_as_close().unwrap();
let rid = inner.rid();
match resources::lookup(rid) {
None => odd_future(errors::bad_resource()),
Some(resource) => {
resource.close();
ok_future(empty_buf())
}
}
}
fn op_shutdown(
_state: &Arc<IsolateState>,
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base: &msg::Base<'_>,
data: libdeno::deno_buf,
) -> Box<Op> {
assert_eq!(data.len(), 0);
let inner = base.inner_as_shutdown().unwrap();
let rid = inner.rid();
let how = inner.how();
match resources::lookup(rid) {
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None => odd_future(errors::bad_resource()),
Some(mut resource) => {
let shutdown_mode = match how {
0 => Shutdown::Read,
1 => Shutdown::Write,
_ => unimplemented!(),
};
blocking(base.sync(), move || {
// Use UFCS for disambiguation
Resource::shutdown(&mut resource, shutdown_mode)?;
Ok(empty_buf())
})
}
}
}
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fn op_read(
_state: &Arc<IsolateState>,
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base: &msg::Base<'_>,
data: libdeno::deno_buf,
) -> Box<Op> {
let cmd_id = base.cmd_id();
let inner = base.inner_as_read().unwrap();
let rid = inner.rid();
match resources::lookup(rid) {
None => odd_future(errors::bad_resource()),
Some(resource) => {
let op = resources::eager_read(resource, data)
.map_err(DenoError::from)
.and_then(move |(_resource, _buf, nread)| {
let builder = &mut FlatBufferBuilder::new();
let inner = msg::ReadRes::create(
builder,
&msg::ReadResArgs {
nread: nread as u32,
eof: nread == 0,
},
);
Ok(serialize_response(
cmd_id,
builder,
msg::BaseArgs {
inner: Some(inner.as_union_value()),
inner_type: msg::Any::ReadRes,
..Default::default()
},
))
});
Box::new(op)
}
}
}
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fn op_write(
_state: &Arc<IsolateState>,
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base: &msg::Base<'_>,
data: libdeno::deno_buf,
) -> Box<Op> {
let cmd_id = base.cmd_id();
let inner = base.inner_as_write().unwrap();
let rid = inner.rid();
match resources::lookup(rid) {
None => odd_future(errors::bad_resource()),
Some(resource) => {
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let op = resources::eager_write(resource, data)
.map_err(DenoError::from)
.and_then(move |(_resource, _buf, nwritten)| {
let builder = &mut FlatBufferBuilder::new();
let inner = msg::WriteRes::create(
builder,
&msg::WriteResArgs {
nbyte: nwritten as u32,
},
);
Ok(serialize_response(
cmd_id,
builder,
msg::BaseArgs {
inner: Some(inner.as_union_value()),
inner_type: msg::Any::WriteRes,
..Default::default()
},
))
});
Box::new(op)
}
}
}
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fn op_remove(
state: &Arc<IsolateState>,
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base: &msg::Base<'_>,
data: libdeno::deno_buf,
) -> Box<Op> {
assert_eq!(data.len(), 0);
let inner = base.inner_as_remove().unwrap();
let path_ = inner.path().unwrap();
let path = PathBuf::from(path_);
let recursive = inner.recursive();
if let Err(e) = state.check_write(path.to_str().unwrap()) {
return odd_future(e);
}
blocking(base.sync(), move || {
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debug!("op_remove {}", path.display());
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let metadata = fs::metadata(&path)?;
if metadata.is_file() {
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fs::remove_file(&path)?;
} else if recursive {
remove_dir_all(&path)?;
} else {
fs::remove_dir(&path)?;
}
Ok(empty_buf())
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})
}
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// Prototype https://github.com/denoland/deno/blob/golang/os.go#L171-L184
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fn op_read_file(
_state: &Arc<IsolateState>,
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base: &msg::Base<'_>,
data: libdeno::deno_buf,
) -> Box<Op> {
assert_eq!(data.len(), 0);
let inner = base.inner_as_read_file().unwrap();
let cmd_id = base.cmd_id();
let filename = PathBuf::from(inner.filename().unwrap());
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debug!("op_read_file {}", filename.display());
blocking(base.sync(), move || {
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let vec = fs::read(&filename)?;
// Build the response message. memcpy data into inner.
// TODO(ry) zero-copy.
let builder = &mut FlatBufferBuilder::new();
let data_off = builder.create_vector(vec.as_slice());
let inner = msg::ReadFileRes::create(
builder,
&msg::ReadFileResArgs {
data: Some(data_off),
},
);
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Ok(serialize_response(
cmd_id,
builder,
msg::BaseArgs {
inner: Some(inner.as_union_value()),
inner_type: msg::Any::ReadFileRes,
..Default::default()
},
))
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})
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}
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fn op_copy_file(
state: &Arc<IsolateState>,
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base: &msg::Base<'_>,
data: libdeno::deno_buf,
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) -> Box<Op> {
assert_eq!(data.len(), 0);
let inner = base.inner_as_copy_file().unwrap();
let from = PathBuf::from(inner.from().unwrap());
let to_ = inner.to().unwrap();
let to = PathBuf::from(to_);
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if let Err(e) = state.check_write(&to_) {
return odd_future(e);
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}
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debug!("op_copy_file {} {}", from.display(), to.display());
blocking(base.sync(), move || {
// On *nix, Rust deem non-existent path as invalid input
// See https://github.com/rust-lang/rust/issues/54800
// Once the issue is reolved, we should remove this workaround.
if cfg!(unix) && !from.is_file() {
return Err(errors::new(
ErrorKind::NotFound,
"File not found".to_string(),
));
}
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fs::copy(&from, &to)?;
Ok(empty_buf())
})
}
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macro_rules! to_seconds {
($time:expr) => {{
// Unwrap is safe here as if the file is before the unix epoch
// something is very wrong.
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$time
.and_then(|t| Ok(t.duration_since(UNIX_EPOCH).unwrap().as_secs()))
.unwrap_or(0)
}};
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}
#[cfg(any(unix))]
fn get_mode(perm: &fs::Permissions) -> u32 {
perm.mode()
}
#[cfg(not(any(unix)))]
fn get_mode(_perm: &fs::Permissions) -> u32 {
0
}
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fn op_cwd(
_state: &Arc<IsolateState>,
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base: &msg::Base<'_>,
data: libdeno::deno_buf,
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) -> Box<Op> {
assert_eq!(data.len(), 0);
let cmd_id = base.cmd_id();
Box::new(futures::future::result(|| -> OpResult {
let path = std::env::current_dir()?;
let builder = &mut FlatBufferBuilder::new();
let cwd =
builder.create_string(&path.into_os_string().into_string().unwrap());
let inner =
msg::CwdRes::create(builder, &msg::CwdResArgs { cwd: Some(cwd) });
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Ok(serialize_response(
cmd_id,
builder,
msg::BaseArgs {
inner: Some(inner.as_union_value()),
inner_type: msg::Any::CwdRes,
..Default::default()
},
))
}()))
}
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fn op_stat(
_state: &Arc<IsolateState>,
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base: &msg::Base<'_>,
data: libdeno::deno_buf,
) -> Box<Op> {
assert_eq!(data.len(), 0);
let inner = base.inner_as_stat().unwrap();
let cmd_id = base.cmd_id();
let filename = PathBuf::from(inner.filename().unwrap());
let lstat = inner.lstat();
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blocking(base.sync(), move || {
let builder = &mut FlatBufferBuilder::new();
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debug!("op_stat {} {}", filename.display(), lstat);
let metadata = if lstat {
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fs::symlink_metadata(&filename)?
} else {
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fs::metadata(&filename)?
};
let inner = msg::StatRes::create(
builder,
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&msg::StatResArgs {
is_file: metadata.is_file(),
is_symlink: metadata.file_type().is_symlink(),
len: metadata.len(),
modified: to_seconds!(metadata.modified()),
accessed: to_seconds!(metadata.accessed()),
created: to_seconds!(metadata.created()),
mode: get_mode(&metadata.permissions()),
has_mode: cfg!(target_family = "unix"),
..Default::default()
},
);
2018-08-29 09:22:25 -04:00
2018-09-09 19:48:10 -04:00
Ok(serialize_response(
cmd_id,
builder,
msg::BaseArgs {
inner: Some(inner.as_union_value()),
inner_type: msg::Any::StatRes,
..Default::default()
},
))
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})
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}
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fn op_read_dir(
_state: &Arc<IsolateState>,
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base: &msg::Base<'_>,
data: libdeno::deno_buf,
2018-10-03 17:56:56 -04:00
) -> Box<Op> {
assert_eq!(data.len(), 0);
let inner = base.inner_as_read_dir().unwrap();
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let cmd_id = base.cmd_id();
let path = String::from(inner.path().unwrap());
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blocking(base.sync(), move || -> OpResult {
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debug!("op_read_dir {}", path);
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let builder = &mut FlatBufferBuilder::new();
let entries: Vec<_> = fs::read_dir(Path::new(&path))?
.map(|entry| {
let entry = entry.unwrap();
let metadata = entry.metadata().unwrap();
let file_type = metadata.file_type();
let name = builder.create_string(entry.file_name().to_str().unwrap());
let path = builder.create_string(entry.path().to_str().unwrap());
msg::StatRes::create(
builder,
&msg::StatResArgs {
is_file: file_type.is_file(),
is_symlink: file_type.is_symlink(),
len: metadata.len(),
modified: to_seconds!(metadata.modified()),
accessed: to_seconds!(metadata.accessed()),
created: to_seconds!(metadata.created()),
name: Some(name),
path: Some(path),
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mode: get_mode(&metadata.permissions()),
has_mode: cfg!(target_family = "unix"),
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},
)
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}).collect();
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let entries = builder.create_vector(&entries);
let inner = msg::ReadDirRes::create(
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builder,
&msg::ReadDirResArgs {
entries: Some(entries),
},
);
Ok(serialize_response(
cmd_id,
builder,
msg::BaseArgs {
inner: Some(inner.as_union_value()),
inner_type: msg::Any::ReadDirRes,
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..Default::default()
},
))
})
}
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fn op_write_file(
state: &Arc<IsolateState>,
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base: &msg::Base<'_>,
data: libdeno::deno_buf,
) -> Box<Op> {
let inner = base.inner_as_write_file().unwrap();
let filename = String::from(inner.filename().unwrap());
let perm = inner.perm();
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if let Err(e) = state.check_write(&filename) {
return odd_future(e);
}
blocking(base.sync(), move || -> OpResult {
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debug!("op_write_file {} {}", filename, data.len());
deno_fs::write_file(Path::new(&filename), data, perm)?;
Ok(empty_buf())
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})
}
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fn op_rename(
state: &Arc<IsolateState>,
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base: &msg::Base<'_>,
data: libdeno::deno_buf,
) -> Box<Op> {
assert_eq!(data.len(), 0);
let inner = base.inner_as_rename().unwrap();
let oldpath = PathBuf::from(inner.oldpath().unwrap());
let newpath_ = inner.newpath().unwrap();
let newpath = PathBuf::from(newpath_);
if let Err(e) = state.check_write(&newpath_) {
return odd_future(e);
}
blocking(base.sync(), move || -> OpResult {
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debug!("op_rename {} {}", oldpath.display(), newpath.display());
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fs::rename(&oldpath, &newpath)?;
Ok(empty_buf())
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})
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}
2018-09-19 00:38:24 -04:00
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fn op_symlink(
state: &Arc<IsolateState>,
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base: &msg::Base<'_>,
data: libdeno::deno_buf,
) -> Box<Op> {
assert_eq!(data.len(), 0);
let inner = base.inner_as_symlink().unwrap();
let oldname = PathBuf::from(inner.oldname().unwrap());
let newname_ = inner.newname().unwrap();
let newname = PathBuf::from(newname_);
if let Err(e) = state.check_write(&newname_) {
return odd_future(e);
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}
// TODO Use type for Windows.
if cfg!(windows) {
return odd_future(errors::new(
ErrorKind::Other,
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"Not implemented".to_string(),
));
2018-09-19 00:38:24 -04:00
}
blocking(base.sync(), move || -> OpResult {
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debug!("op_symlink {} {}", oldname.display(), newname.display());
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#[cfg(any(unix))]
std::os::unix::fs::symlink(&oldname, &newname)?;
Ok(empty_buf())
})
2018-09-19 00:38:24 -04:00
}
2018-09-25 00:20:49 -04:00
2018-10-03 20:48:02 -04:00
fn op_read_link(
_state: &Arc<IsolateState>,
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base: &msg::Base<'_>,
data: libdeno::deno_buf,
) -> Box<Op> {
assert_eq!(data.len(), 0);
let inner = base.inner_as_readlink().unwrap();
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let cmd_id = base.cmd_id();
let name = PathBuf::from(inner.name().unwrap());
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blocking(base.sync(), move || -> OpResult {
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debug!("op_read_link {}", name.display());
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let path = fs::read_link(&name)?;
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let builder = &mut FlatBufferBuilder::new();
let path_off = builder.create_string(path.to_str().unwrap());
let inner = msg::ReadlinkRes::create(
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builder,
&msg::ReadlinkResArgs {
path: Some(path_off),
},
);
Ok(serialize_response(
cmd_id,
builder,
msg::BaseArgs {
inner: Some(inner.as_union_value()),
inner_type: msg::Any::ReadlinkRes,
2018-09-25 00:20:49 -04:00
..Default::default()
},
))
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})
2018-09-25 00:20:49 -04:00
}
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fn op_repl_start(
state: &Arc<IsolateState>,
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base: &msg::Base<'_>,
data: libdeno::deno_buf,
) -> Box<Op> {
assert_eq!(data.len(), 0);
let inner = base.inner_as_repl_start().unwrap();
let cmd_id = base.cmd_id();
let history_file = String::from(inner.history_file().unwrap());
debug!("op_repl_start {}", history_file);
let history_path = repl::history_path(&state.dir, &history_file);
let repl = repl::Repl::new(history_path);
let resource = resources::add_repl(repl);
let builder = &mut FlatBufferBuilder::new();
let inner = msg::ReplStartRes::create(
builder,
&msg::ReplStartResArgs { rid: resource.rid },
);
ok_future(serialize_response(
cmd_id,
builder,
msg::BaseArgs {
inner: Some(inner.as_union_value()),
inner_type: msg::Any::ReplStartRes,
..Default::default()
},
))
}
fn op_repl_readline(
_state: &Arc<IsolateState>,
2019-01-14 01:30:38 -05:00
base: &msg::Base<'_>,
data: libdeno::deno_buf,
) -> Box<Op> {
assert_eq!(data.len(), 0);
let inner = base.inner_as_repl_readline().unwrap();
let cmd_id = base.cmd_id();
let rid = inner.rid();
let prompt = inner.prompt().unwrap().to_owned();
debug!("op_repl_readline {} {}", rid, prompt);
blocking(base.sync(), move || -> OpResult {
let line = resources::readline(rid, &prompt)?;
let builder = &mut FlatBufferBuilder::new();
let line_off = builder.create_string(&line);
let inner = msg::ReplReadlineRes::create(
builder,
&msg::ReplReadlineResArgs {
line: Some(line_off),
},
);
Ok(serialize_response(
cmd_id,
builder,
msg::BaseArgs {
inner: Some(inner.as_union_value()),
inner_type: msg::Any::ReplReadlineRes,
..Default::default()
},
))
})
}
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fn op_truncate(
state: &Arc<IsolateState>,
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base: &msg::Base<'_>,
data: libdeno::deno_buf,
2018-09-30 15:06:20 -04:00
) -> Box<Op> {
assert_eq!(data.len(), 0);
let inner = base.inner_as_truncate().unwrap();
let filename = String::from(inner.name().unwrap());
let len = inner.len();
if let Err(e) = state.check_write(&filename) {
return odd_future(e);
}
blocking(base.sync(), move || {
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debug!("op_truncate {} {}", filename, len);
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let f = fs::OpenOptions::new().write(true).open(&filename)?;
f.set_len(u64::from(len))?;
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Ok(empty_buf())
})
}
2018-10-03 20:48:02 -04:00
fn op_listen(
state: &Arc<IsolateState>,
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base: &msg::Base<'_>,
data: libdeno::deno_buf,
) -> Box<Op> {
assert_eq!(data.len(), 0);
if let Err(e) = state.check_net("listen") {
return odd_future(e);
}
let cmd_id = base.cmd_id();
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let inner = base.inner_as_listen().unwrap();
let network = inner.network().unwrap();
assert_eq!(network, "tcp");
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let address = inner.address().unwrap();
Box::new(futures::future::result((move || {
let addr = resolve_addr(address).wait()?;
let listener = TcpListener::bind(&addr)?;
let resource = resources::add_tcp_listener(listener);
let builder = &mut FlatBufferBuilder::new();
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let inner = msg::ListenRes::create(
builder,
&msg::ListenResArgs { rid: resource.rid },
);
Ok(serialize_response(
cmd_id,
builder,
msg::BaseArgs {
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inner: Some(inner.as_union_value()),
inner_type: msg::Any::ListenRes,
..Default::default()
},
))
})()))
}
fn new_conn(cmd_id: u32, tcp_stream: TcpStream) -> OpResult {
let tcp_stream_resource = resources::add_tcp_stream(tcp_stream);
// TODO forward socket_addr to client.
let builder = &mut FlatBufferBuilder::new();
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let inner = msg::NewConn::create(
builder,
&msg::NewConnArgs {
rid: tcp_stream_resource.rid,
..Default::default()
},
);
Ok(serialize_response(
cmd_id,
builder,
msg::BaseArgs {
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inner: Some(inner.as_union_value()),
inner_type: msg::Any::NewConn,
..Default::default()
},
))
}
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fn op_accept(
state: &Arc<IsolateState>,
2019-01-14 01:30:38 -05:00
base: &msg::Base<'_>,
data: libdeno::deno_buf,
) -> Box<Op> {
assert_eq!(data.len(), 0);
if let Err(e) = state.check_net("accept") {
return odd_future(e);
}
let cmd_id = base.cmd_id();
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let inner = base.inner_as_accept().unwrap();
let server_rid = inner.rid();
match resources::lookup(server_rid) {
None => odd_future(errors::bad_resource()),
Some(server_resource) => {
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let op = resources::eager_accept(server_resource)
.map_err(DenoError::from)
.and_then(move |(tcp_stream, _socket_addr)| {
new_conn(cmd_id, tcp_stream)
});
Box::new(op)
}
}
}
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fn op_dial(
state: &Arc<IsolateState>,
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base: &msg::Base<'_>,
data: libdeno::deno_buf,
) -> Box<Op> {
assert_eq!(data.len(), 0);
if let Err(e) = state.check_net("dial") {
return odd_future(e);
}
let cmd_id = base.cmd_id();
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let inner = base.inner_as_dial().unwrap();
let network = inner.network().unwrap();
assert_eq!(network, "tcp"); // TODO Support others.
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let address = inner.address().unwrap();
let op =
resolve_addr(address)
.map_err(DenoError::from)
.and_then(move |addr| {
TcpStream::connect(&addr)
.map_err(DenoError::from)
.and_then(move |tcp_stream| new_conn(cmd_id, tcp_stream))
});
Box::new(op)
}
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fn op_metrics(
state: &Arc<IsolateState>,
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base: &msg::Base<'_>,
data: libdeno::deno_buf,
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) -> Box<Op> {
assert_eq!(data.len(), 0);
let cmd_id = base.cmd_id();
let builder = &mut FlatBufferBuilder::new();
let inner = msg::MetricsRes::create(
builder,
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&msg::MetricsResArgs::from(&state.metrics),
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);
ok_future(serialize_response(
cmd_id,
builder,
msg::BaseArgs {
inner: Some(inner.as_union_value()),
inner_type: msg::Any::MetricsRes,
..Default::default()
},
))
}
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fn op_resources(
_state: &Arc<IsolateState>,
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base: &msg::Base<'_>,
data: libdeno::deno_buf,
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) -> Box<Op> {
assert_eq!(data.len(), 0);
let cmd_id = base.cmd_id();
let builder = &mut FlatBufferBuilder::new();
let serialized_resources = table_entries();
let res: Vec<_> = serialized_resources
.iter()
.map(|(key, value)| {
let repr = builder.create_string(value);
msg::Resource::create(
builder,
&msg::ResourceArgs {
rid: *key,
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repr: Some(repr),
},
)
}).collect();
let resources = builder.create_vector(&res);
let inner = msg::ResourcesRes::create(
builder,
&msg::ResourcesResArgs {
resources: Some(resources),
},
);
ok_future(serialize_response(
cmd_id,
builder,
msg::BaseArgs {
inner: Some(inner.as_union_value()),
inner_type: msg::Any::ResourcesRes,
..Default::default()
},
))
}
fn subprocess_stdio_map(v: msg::ProcessStdio) -> std::process::Stdio {
match v {
msg::ProcessStdio::Inherit => std::process::Stdio::inherit(),
msg::ProcessStdio::Piped => std::process::Stdio::piped(),
msg::ProcessStdio::Null => std::process::Stdio::null(),
}
}
fn op_run(
state: &Arc<IsolateState>,
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base: &msg::Base<'_>,
data: libdeno::deno_buf,
) -> Box<Op> {
assert!(base.sync());
let cmd_id = base.cmd_id();
if let Err(e) = state.check_run() {
return odd_future(e);
}
assert_eq!(data.len(), 0);
let inner = base.inner_as_run().unwrap();
let args = inner.args().unwrap();
let cwd = inner.cwd();
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let mut c = Command::new(args.get(0));
(1..args.len()).for_each(|i| {
let arg = args.get(i);
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c.arg(arg);
});
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cwd.map(|d| c.current_dir(d));
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c.stdin(subprocess_stdio_map(inner.stdin()));
c.stdout(subprocess_stdio_map(inner.stdout()));
c.stderr(subprocess_stdio_map(inner.stderr()));
// Spawn the command.
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let child = match c.spawn_async() {
Ok(v) => v,
Err(err) => {
return odd_future(err.into());
}
};
let pid = child.id();
let resources = resources::add_child(child);
let mut res_args = msg::RunResArgs {
rid: resources.child_rid,
pid,
..Default::default()
};
if let Some(stdin_rid) = resources.stdin_rid {
res_args.stdin_rid = stdin_rid;
}
if let Some(stdout_rid) = resources.stdout_rid {
res_args.stdout_rid = stdout_rid;
}
if let Some(stderr_rid) = resources.stderr_rid {
res_args.stderr_rid = stderr_rid;
}
let builder = &mut FlatBufferBuilder::new();
let inner = msg::RunRes::create(builder, &res_args);
ok_future(serialize_response(
cmd_id,
builder,
msg::BaseArgs {
inner: Some(inner.as_union_value()),
inner_type: msg::Any::RunRes,
..Default::default()
},
))
}
fn op_run_status(
state: &Arc<IsolateState>,
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base: &msg::Base<'_>,
data: libdeno::deno_buf,
) -> Box<Op> {
assert_eq!(data.len(), 0);
let cmd_id = base.cmd_id();
let inner = base.inner_as_run_status().unwrap();
let rid = inner.rid();
if let Err(e) = state.check_run() {
return odd_future(e);
}
let future = match resources::child_status(rid) {
Err(e) => {
return odd_future(e);
}
Ok(f) => f,
};
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();
let builder = &mut FlatBufferBuilder::new();
let inner = msg::RunStatusRes::create(
builder,
&msg::RunStatusResArgs {
got_signal,
exit_code: code.unwrap_or(-1),
exit_signal: signal.unwrap_or(-1),
},
);
Ok(serialize_response(
cmd_id,
builder,
msg::BaseArgs {
inner: Some(inner.as_union_value()),
inner_type: msg::Any::RunStatusRes,
..Default::default()
},
))
});
Box::new(future)
}
struct GetMessageFuture {
pub state: Arc<IsolateState>,
}
impl Future for GetMessageFuture {
type Item = Option<Buf>;
type Error = ();
fn poll(&mut self) -> Result<Async<Self::Item>, Self::Error> {
assert!(self.state.worker_channels.is_some());
match self.state.worker_channels {
None => panic!("expected worker_channels"),
Some(ref wc) => {
let mut wc = wc.lock().unwrap();
wc.1.poll()
}
}
}
}
fn op_worker_get_message(
state: &Arc<IsolateState>,
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base: &msg::Base<'_>,
data: libdeno::deno_buf,
) -> Box<Op> {
assert_eq!(data.len(), 0);
let cmd_id = base.cmd_id();
let op = GetMessageFuture {
state: state.clone(),
};
let op = op.map_err(move |_| -> DenoError { unimplemented!() });
let op = op.and_then(move |maybe_buf| -> DenoResult<Buf> {
debug!("op_worker_get_message");
let builder = &mut FlatBufferBuilder::new();
let data = maybe_buf.as_ref().map(|buf| builder.create_vector(buf));
let inner = msg::WorkerGetMessageRes::create(
builder,
&msg::WorkerGetMessageResArgs { data },
);
Ok(serialize_response(
cmd_id,
builder,
msg::BaseArgs {
inner: Some(inner.as_union_value()),
inner_type: msg::Any::WorkerGetMessageRes,
..Default::default()
},
))
});
Box::new(op)
}
fn op_worker_post_message(
state: &Arc<IsolateState>,
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base: &msg::Base<'_>,
data: libdeno::deno_buf,
) -> Box<Op> {
let cmd_id = base.cmd_id();
let d = Vec::from(data.as_ref()).into_boxed_slice();
assert!(state.worker_channels.is_some());
let tx = match state.worker_channels {
None => panic!("expected worker_channels"),
Some(ref wc) => {
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let wc = wc.lock().unwrap();
wc.0.clone()
}
};
let op = tx.send(d);
let op = op.map_err(|e| errors::new(ErrorKind::Other, e.to_string()));
let op = op.and_then(move |_| -> DenoResult<Buf> {
let builder = &mut FlatBufferBuilder::new();
Ok(serialize_response(
cmd_id,
builder,
msg::BaseArgs {
..Default::default()
},
))
});
Box::new(op)
}