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// Copyright 2018-2022 the Deno authors. All rights reserved. MIT license.
use super::utils::into_string;use crate::permissions::Permissions;use crate::worker::ExitCode;use deno_core::error::{type_error, AnyError};use deno_core::url::Url;use deno_core::Extension;use deno_core::OpState;use deno_core::{op, ExtensionBuilder};use deno_node::NODE_ENV_VAR_ALLOWLIST;use std::collections::HashMap;use std::env;
mod sys_info;
fn init_ops(builder: &mut ExtensionBuilder) -> &mut ExtensionBuilder {  builder.ops(vec![    op_env::decl(),    op_exec_path::decl(),    op_exit::decl(),    op_delete_env::decl(),    op_get_env::decl(),    op_gid::decl(),    op_hostname::decl(),    op_loadavg::decl(),    op_network_interfaces::decl(),    op_os_release::decl(),    op_set_env::decl(),    op_set_exit_code::decl(),    op_system_memory_info::decl(),    op_uid::decl(),  ])}
pub fn init(exit_code: ExitCode) -> Extension {  let mut builder = Extension::builder();  init_ops(&mut builder)    .state(move |state| {      state.put::<ExitCode>(exit_code.clone());      Ok(())    })    .build()}
pub fn init_for_worker() -> Extension {  let mut builder = Extension::builder();  init_ops(&mut builder)    .middleware(|op| match op.name {      "op_exit" => noop_op::decl(),      "op_set_exit_code" => noop_op::decl(),      _ => op,    })    .build()}
#[op]fn noop_op() -> Result<(), AnyError> {  Ok(())}
#[op]fn op_exec_path(state: &mut OpState) -> Result<String, AnyError> {  let current_exe = env::current_exe().unwrap();  state.borrow_mut::<Permissions>().read.check_blind(    &current_exe,    "exec_path",    "Deno.execPath()",  )?;  // Now apply URL parser to current exe to get fully resolved path, otherwise  // we might get `./` and `../` bits in `exec_path`  let exe_url = Url::from_file_path(current_exe).unwrap();  let path = exe_url.to_file_path().unwrap();
  into_string(path.into_os_string())}
#[op]fn op_set_env(  state: &mut OpState,  key: String,  value: String,) -> Result<(), AnyError> {  state.borrow_mut::<Permissions>().env.check(&key)?;  if key.is_empty() {    return Err(type_error("Key is an empty string."));  }  if key.contains(&['=', '\0'] as &[char]) {    return Err(type_error(format!(      "Key contains invalid characters: {:?}",      key    )));  }  if value.contains('\0') {    return Err(type_error(format!(      "Value contains invalid characters: {:?}",      value    )));  }  env::set_var(key, value);  Ok(())}
#[op]fn op_env(state: &mut OpState) -> Result<HashMap<String, String>, AnyError> {  state.borrow_mut::<Permissions>().env.check_all()?;  Ok(env::vars().collect())}
#[op]fn op_get_env(  state: &mut OpState,  key: String,) -> Result<Option<String>, AnyError> {  let skip_permission_check = NODE_ENV_VAR_ALLOWLIST.contains(&key);
  if !skip_permission_check {    state.borrow_mut::<Permissions>().env.check(&key)?;  }
  if key.is_empty() {    return Err(type_error("Key is an empty string."));  }
  if key.contains(&['=', '\0'] as &[char]) {    return Err(type_error(format!(      "Key contains invalid characters: {:?}",      key    )));  }
  let r = match env::var(key) {    Err(env::VarError::NotPresent) => None,    v => Some(v?),  };  Ok(r)}
#[op]fn op_delete_env(state: &mut OpState, key: String) -> Result<(), AnyError> {  state.borrow_mut::<Permissions>().env.check(&key)?;  if key.is_empty() || key.contains(&['=', '\0'] as &[char]) {    return Err(type_error("Key contains invalid characters."));  }  env::remove_var(key);  Ok(())}
#[op]fn op_set_exit_code(state: &mut OpState, code: i32) {  state.borrow_mut::<ExitCode>().set(code);}
#[op]fn op_exit(state: &mut OpState) {  let code = state.borrow::<ExitCode>().get();  std::process::exit(code)}
#[op]fn op_loadavg(state: &mut OpState) -> Result<(f64, f64, f64), AnyError> {  state    .borrow_mut::<Permissions>()    .sys    .check("loadavg", Some("Deno.loadavg()"))?;  Ok(sys_info::loadavg())}
#[op]fn op_hostname(state: &mut OpState) -> Result<String, AnyError> {  state    .borrow_mut::<Permissions>()    .sys    .check("hostname", Some("Deno.hostname()"))?;  Ok(sys_info::hostname())}
#[op]fn op_os_release(state: &mut OpState) -> Result<String, AnyError> {  state    .borrow_mut::<Permissions>()    .sys    .check("osRelease", Some("Deno.osRelease()"))?;  Ok(sys_info::os_release())}
#[op]fn op_network_interfaces(  state: &mut OpState,) -> Result<Vec<NetworkInterface>, AnyError> {  state    .borrow_mut::<Permissions>()    .sys    .check("networkInterfaces", Some("Deno.networkInterfaces()"))?;  Ok(netif::up()?.map(NetworkInterface::from).collect())}
#[derive(serde::Serialize)]struct NetworkInterface {  family: &'static str,  name: String,  address: String,  netmask: String,  scopeid: Option<u32>,  cidr: String,  mac: String,}
impl From<netif::Interface> for NetworkInterface {  fn from(ifa: netif::Interface) -> Self {    let family = match ifa.address() {      std::net::IpAddr::V4(_) => "IPv4",      std::net::IpAddr::V6(_) => "IPv6",    };
    let (address, range) = ifa.cidr();    let cidr = format!("{:?}/{}", address, range);
    let name = ifa.name().to_owned();    let address = format!("{:?}", ifa.address());    let netmask = format!("{:?}", ifa.netmask());    let scopeid = ifa.scope_id();
    let [b0, b1, b2, b3, b4, b5] = ifa.mac();    let mac = format!(      "{:02x}:{:02x}:{:02x}:{:02x}:{:02x}:{:02x}",      b0, b1, b2, b3, b4, b5    );
    Self {      family,      name,      address,      netmask,      scopeid,      cidr,      mac,    }  }}
#[op]fn op_system_memory_info(  state: &mut OpState,) -> Result<Option<sys_info::MemInfo>, AnyError> {  state    .borrow_mut::<Permissions>()    .sys    .check("systemMemoryInfo", Some("Deno.systemMemoryInfo()"))?;  Ok(sys_info::mem_info())}
#[cfg(not(windows))]#[op]fn op_gid(state: &mut OpState) -> Result<Option<u32>, AnyError> {  state    .borrow_mut::<Permissions>()    .sys    .check("gid", Some("Deno.gid()"))?;  // TODO(bartlomieju):  #[allow(clippy::undocumented_unsafe_blocks)]  unsafe {    Ok(Some(libc::getgid()))  }}
#[cfg(windows)]#[op]fn op_gid(state: &mut OpState) -> Result<Option<u32>, AnyError> {  state    .borrow_mut::<Permissions>()    .sys    .check("gid", Some("Deno.gid()"))?;  Ok(None)}
#[cfg(not(windows))]#[op]fn op_uid(state: &mut OpState) -> Result<Option<u32>, AnyError> {  state    .borrow_mut::<Permissions>()    .sys    .check("uid", Some("Deno.uid()"))?;  // TODO(bartlomieju):  #[allow(clippy::undocumented_unsafe_blocks)]  unsafe {    Ok(Some(libc::getuid()))  }}
#[cfg(windows)]#[op]fn op_uid(state: &mut OpState) -> Result<Option<u32>, AnyError> {  state    .borrow_mut::<Permissions>()    .sys    .check("uid", Some("Deno.uid()"))?;  Ok(None)}