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https://github.com/denoland/deno.git
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192 lines
5 KiB
Rust
192 lines
5 KiB
Rust
// Copyright 2018-2021 the Deno authors. All rights reserved. MIT license.
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use crate::permissions::Permissions;
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use deno_core::error::AnyError;
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use deno_core::serde_json;
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use deno_core::serde_json::json;
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use deno_core::serde_json::Value;
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use deno_core::url::Url;
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use deno_core::OpState;
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use deno_core::ZeroCopyBuf;
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use serde::Deserialize;
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use std::collections::HashMap;
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use std::env;
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pub fn init(rt: &mut deno_core::JsRuntime) {
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super::reg_json_sync(rt, "op_exit", op_exit);
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super::reg_json_sync(rt, "op_env", op_env);
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super::reg_json_sync(rt, "op_exec_path", op_exec_path);
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super::reg_json_sync(rt, "op_set_env", op_set_env);
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super::reg_json_sync(rt, "op_get_env", op_get_env);
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super::reg_json_sync(rt, "op_delete_env", op_delete_env);
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super::reg_json_sync(rt, "op_hostname", op_hostname);
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super::reg_json_sync(rt, "op_loadavg", op_loadavg);
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super::reg_json_sync(rt, "op_os_release", op_os_release);
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super::reg_json_sync(rt, "op_system_memory_info", op_system_memory_info);
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super::reg_json_sync(rt, "op_system_cpu_info", op_system_cpu_info);
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}
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fn op_exec_path(
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state: &mut OpState,
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_args: Value,
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_zero_copy: &mut [ZeroCopyBuf],
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) -> Result<Value, AnyError> {
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let current_exe = env::current_exe().unwrap();
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state
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.borrow::<Permissions>()
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.check_read_blind(¤t_exe, "exec_path")?;
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// Now apply URL parser to current exe to get fully resolved path, otherwise
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// we might get `./` and `../` bits in `exec_path`
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let exe_url = Url::from_file_path(current_exe).unwrap();
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let path = exe_url.to_file_path().unwrap();
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Ok(json!(path))
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}
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#[derive(Deserialize)]
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struct SetEnv {
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key: String,
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value: String,
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}
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fn op_set_env(
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state: &mut OpState,
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args: Value,
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_zero_copy: &mut [ZeroCopyBuf],
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) -> Result<Value, AnyError> {
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let args: SetEnv = serde_json::from_value(args)?;
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state.borrow::<Permissions>().check_env()?;
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env::set_var(args.key, args.value);
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Ok(json!({}))
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}
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fn op_env(
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state: &mut OpState,
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_args: Value,
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_zero_copy: &mut [ZeroCopyBuf],
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) -> Result<Value, AnyError> {
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state.borrow::<Permissions>().check_env()?;
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let v = env::vars().collect::<HashMap<String, String>>();
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Ok(json!(v))
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}
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#[derive(Deserialize)]
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struct GetEnv {
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key: String,
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}
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fn op_get_env(
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state: &mut OpState,
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args: Value,
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_zero_copy: &mut [ZeroCopyBuf],
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) -> Result<Value, AnyError> {
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let args: GetEnv = serde_json::from_value(args)?;
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state.borrow::<Permissions>().check_env()?;
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let r = match env::var(args.key) {
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Err(env::VarError::NotPresent) => json!([]),
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v => json!([v?]),
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};
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Ok(r)
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}
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#[derive(Deserialize)]
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struct DeleteEnv {
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key: String,
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}
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fn op_delete_env(
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state: &mut OpState,
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args: Value,
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_zero_copy: &mut [ZeroCopyBuf],
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) -> Result<Value, AnyError> {
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let args: DeleteEnv = serde_json::from_value(args)?;
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state.borrow::<Permissions>().check_env()?;
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env::remove_var(args.key);
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Ok(json!({}))
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}
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#[derive(Deserialize)]
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struct Exit {
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code: i32,
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}
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fn op_exit(
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_state: &mut OpState,
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args: Value,
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_zero_copy: &mut [ZeroCopyBuf],
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) -> Result<Value, AnyError> {
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let args: Exit = serde_json::from_value(args)?;
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std::process::exit(args.code)
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}
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fn op_loadavg(
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state: &mut OpState,
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_args: Value,
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_zero_copy: &mut [ZeroCopyBuf],
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) -> Result<Value, AnyError> {
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super::check_unstable(state, "Deno.loadavg");
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state.borrow::<Permissions>().check_env()?;
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match sys_info::loadavg() {
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Ok(loadavg) => Ok(json!([loadavg.one, loadavg.five, loadavg.fifteen])),
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Err(_) => Ok(json!([0f64, 0f64, 0f64])),
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}
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}
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fn op_hostname(
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state: &mut OpState,
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_args: Value,
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_zero_copy: &mut [ZeroCopyBuf],
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) -> Result<Value, AnyError> {
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super::check_unstable(state, "Deno.hostname");
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state.borrow::<Permissions>().check_env()?;
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let hostname = sys_info::hostname().unwrap_or_else(|_| "".to_string());
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Ok(json!(hostname))
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}
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fn op_os_release(
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state: &mut OpState,
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_args: Value,
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_zero_copy: &mut [ZeroCopyBuf],
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) -> Result<Value, AnyError> {
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super::check_unstable(state, "Deno.osRelease");
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state.borrow::<Permissions>().check_env()?;
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let release = sys_info::os_release().unwrap_or_else(|_| "".to_string());
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Ok(json!(release))
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}
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fn op_system_memory_info(
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state: &mut OpState,
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_args: Value,
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_zero_copy: &mut [ZeroCopyBuf],
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) -> Result<Value, AnyError> {
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super::check_unstable(state, "Deno.systemMemoryInfo");
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state.borrow::<Permissions>().check_env()?;
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match sys_info::mem_info() {
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Ok(info) => Ok(json!({
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"total": info.total,
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"free": info.free,
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"available": info.avail,
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"buffers": info.buffers,
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"cached": info.cached,
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"swapTotal": info.swap_total,
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"swapFree": info.swap_free
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})),
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Err(_) => Ok(json!({})),
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}
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}
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fn op_system_cpu_info(
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state: &mut OpState,
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_args: Value,
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_zero_copy: &mut [ZeroCopyBuf],
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) -> Result<Value, AnyError> {
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super::check_unstable(state, "Deno.systemCpuInfo");
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state.borrow::<Permissions>().check_env()?;
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let cores = sys_info::cpu_num().ok();
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let speed = sys_info::cpu_speed().ok();
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Ok(json!({
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"cores": cores,
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"speed": speed
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}))
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}
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