// Copyright 2018-2026 the Deno authors. MIT license.

pub mod happy_eyeballs;
pub mod io;
pub mod ops;
pub mod ops_tls;
#[cfg(unix)]
pub mod ops_unix;
mod quic;
pub mod raw;
pub mod resolve_addr;
pub mod tcp;
pub mod tunnel;
#[cfg(windows)]
pub mod win_pipe;

use std::sync::Arc;

use deno_core::OpState;
use deno_features::FeatureChecker;
use deno_tls::RootCertStoreProvider;
use deno_tls::rustls::RootCertStore;
pub use quic::QuicError;

pub const UNSTABLE_FEATURE_NAME: &str = "net";

/// Permission check for opening a unix-domain socket path. Shared by the
/// native unix-socket ops and the node-compat `PipeWrap` path in `ext/node`,
/// which also backs Windows named pipes; unlike `ops_unix` this must compile
/// on all platforms.
///
/// A unix socket is both a filesystem entry and an outbound network
/// primitive, so this requires an `--allow-net=unix:<path>` rule in addition
/// to filesystem access on the socket path. Without this, a script with only
/// `--allow-read=/var/run/docker.sock` could connect to local IPC services
/// (Docker, dbus, podman, etc.) with no `--allow-net` grant.
///
/// Abstract socket paths (Linux, leading NUL) have no filesystem entry, so
/// they skip the filesystem check and rely on the network check alone.
pub fn check_unix_socket_path<'a>(
  permissions: &mut deno_permissions::PermissionsContainer,
  path: std::borrow::Cow<'a, std::path::Path>,
  access_kind: deno_permissions::OpenAccessKind,
  api_name: Option<&str>,
) -> Result<
  deno_permissions::CheckedPath<'a>,
  deno_permissions::PermissionCheckError,
> {
  let checked = if is_unix_socket_abstract_path(path.as_ref()) {
    deno_permissions::CheckedPath::unsafe_new(path)
  } else {
    permissions.check_open(path, access_kind, api_name)?
  };
  permissions.check_net_unix_socket(&checked, api_name)?;
  Ok(checked)
}

pub(crate) fn is_unix_socket_abstract_path(path: &std::path::Path) -> bool {
  #[cfg(any(target_os = "android", target_os = "linux"))]
  {
    use std::os::unix::ffi::OsStrExt;
    path.as_os_str().as_bytes().first() == Some(&0)
  }

  #[cfg(not(any(target_os = "android", target_os = "linux")))]
  {
    let _ = path;
    false
  }
}

/// Helper for checking unstable features. Used for sync ops.
fn check_unstable(state: &OpState, api_name: &str) {
  state
    .borrow::<Arc<FeatureChecker>>()
    .check_or_exit(UNSTABLE_FEATURE_NAME, api_name);
}

#[derive(Clone)]
pub struct DefaultTlsOptions {
  pub root_cert_store_provider: Option<Arc<dyn RootCertStoreProvider>>,
}

impl DefaultTlsOptions {
  pub fn root_cert_store(
    &self,
  ) -> Result<Option<RootCertStore>, deno_error::JsErrorBox> {
    Ok(match &self.root_cert_store_provider {
      Some(provider) => Some(provider.get_or_try_init()?.clone()),
      None => None,
    })
  }
}

/// `UnsafelyIgnoreCertificateErrors` is a wrapper struct so it can be placed inside `GothamState`;
/// using type alias for a `Option<Vec<String>>` could work, but there's a high chance
/// that there might be another type alias pointing to a `Option<Vec<String>>`, which
/// would override previously used alias.
pub struct UnsafelyIgnoreCertificateErrors(pub Option<Vec<String>>);

deno_core::extension!(deno_net,
  deps = [ deno_web ],
  ops = [
    ops::op_net_accept_tcp,
    ops::op_net_get_ips_from_perm_token,
    ops::op_net_connect_tcp,
    ops::op_net_listen_tcp,
    ops::op_net_listen_udp,
    ops::op_node_unstable_net_listen_udp,
    ops::op_net_recv_udp,
    ops::op_net_send_udp,
    ops::op_net_join_multi_v4_udp,
    ops::op_net_join_multi_v6_udp,
    ops::op_net_leave_multi_v4_udp,
    ops::op_net_leave_multi_v6_udp,
    ops::op_net_set_multi_loopback_udp,
    ops::op_net_set_multi_ttl_udp,
    ops::op_net_set_broadcast_udp,
    ops::op_net_validate_multicast,
    ops::op_dns_resolve,
    ops::op_net_get_system_dns_servers,
    ops::op_set_nodelay,
    ops::op_set_keepalive,
    ops::op_net_listen_vsock,
    ops::op_net_accept_vsock,
    ops::op_net_connect_vsock,
    ops::op_net_listen_tunnel,
    ops::op_net_accept_tunnel,

    ops_tls::op_tls_key_null,
    ops_tls::op_tls_key_static,
    ops_tls::op_tls_cert_resolver_create,
    ops_tls::op_tls_cert_resolver_poll,
    ops_tls::op_tls_cert_resolver_resolve,
    ops_tls::op_tls_cert_resolver_resolve_error,
    ops_tls::op_tls_start,
    ops_tls::op_net_connect_tls,
    ops_tls::op_net_listen_tls,
    ops_tls::op_net_accept_tls,
    ops_tls::op_tls_handshake,

    ops_unix::op_net_accept_unix,
    ops_unix::op_net_connect_unix,
    ops_unix::op_net_listen_unix,
    ops_unix::op_net_listen_unixpacket,
    ops_unix::op_node_unstable_net_listen_unixpacket,
    ops_unix::op_net_recv_unixpacket,
    ops_unix::op_net_send_unixpacket,

    quic::op_quic_connecting_0rtt,
    quic::op_quic_connecting_1rtt,
    quic::op_quic_connection_accept_bi,
    quic::op_quic_connection_accept_uni,
    quic::op_quic_connection_close,
    quic::op_quic_connection_closed,
    quic::op_quic_connection_get_protocol,
    quic::op_quic_connection_get_remote_addr,
    quic::op_quic_connection_get_server_name,
    quic::op_quic_connection_handshake,
    quic::op_quic_connection_open_bi,
    quic::op_quic_connection_open_uni,
    quic::op_quic_connection_get_max_datagram_size,
    quic::op_quic_connection_read_datagram,
    quic::op_quic_connection_send_datagram,
    quic::op_quic_endpoint_close,
    quic::op_quic_endpoint_connect,
    quic::op_quic_endpoint_create,
    quic::op_quic_endpoint_get_addr,
    quic::op_quic_endpoint_listen,
    quic::op_quic_incoming_accept,
    quic::op_quic_incoming_accept_0rtt,
    quic::op_quic_incoming_ignore,
    quic::op_quic_incoming_local_ip,
    quic::op_quic_incoming_refuse,
    quic::op_quic_incoming_remote_addr,
    quic::op_quic_incoming_remote_addr_validated,
    quic::op_quic_listener_accept,
    quic::op_quic_listener_stop,
    quic::op_quic_recv_stream_get_id,
    quic::op_quic_send_stream_get_id,
    quic::op_quic_send_stream_get_priority,
    quic::op_quic_send_stream_set_priority,
    quic::webtransport::op_webtransport_accept,
    quic::webtransport::op_webtransport_connect,
  ],
  lazy_loaded_esm = [ "03_quic.js" ],
  lazy_loaded_js = [ "01_net.js", "02_tls.js" ],
  options = {
    root_cert_store_provider: Option<Arc<dyn RootCertStoreProvider>>,
    unsafely_ignore_certificate_errors: Option<Vec<String>>,
  },
  state = |state, options| {
    state.put(DefaultTlsOptions {
      root_cert_store_provider: options.root_cert_store_provider,
    });
    state.put(UnsafelyIgnoreCertificateErrors(
      options.unsafely_ignore_certificate_errors,
    ));
  },
);

/// Stub ops for non-unix platforms.
#[cfg(not(unix))]
mod ops_unix {
  use deno_core::op2;

  macro_rules! stub_op {
    ($name:ident) => {
      #[op2(fast)]
      pub fn $name() -> Result<(), std::io::Error> {
        let error_msg = format!(
          "Operation `{:?}` not supported on non-unix platforms.",
          stringify!($name)
        );
        Err(std::io::Error::new(
          std::io::ErrorKind::Unsupported,
          error_msg,
        ))
      }
    };
  }

  stub_op!(op_net_accept_unix);
  stub_op!(op_net_connect_unix);
  stub_op!(op_net_listen_unix);
  stub_op!(op_net_listen_unixpacket);
  stub_op!(op_node_unstable_net_listen_unixpacket);
  stub_op!(op_net_recv_unixpacket);
  stub_op!(op_net_send_unixpacket);
}
