lune/crates/lune-std-net/src/lib.rs
2024-05-12 13:30:32 +02:00

102 lines
3 KiB
Rust

#![allow(clippy::cargo_common_metadata)]
use bstr::BString;
use mlua::prelude::*;
use mlua_luau_scheduler::LuaSpawnExt;
mod client;
mod config;
mod server;
mod util;
mod websocket;
use lune_utils::TableBuilder;
use self::{
client::{NetClient, NetClientBuilder},
config::{RequestConfig, ServeConfig},
server::serve,
util::create_user_agent_header,
websocket::NetWebSocket,
};
use lune_std_serde::{decode, encode, EncodeDecodeConfig, EncodeDecodeFormat};
/**
Creates the `net` standard library module.
# Errors
Errors when out of memory.
*/
pub fn module(lua: &Lua) -> LuaResult<LuaTable> {
NetClientBuilder::new()
.headers(&[("User-Agent", create_user_agent_header(lua)?)])?
.build()?
.into_registry(lua);
TableBuilder::new(lua)?
.with_function("jsonEncode", net_json_encode)?
.with_function("jsonDecode", net_json_decode)?
.with_async_function("request", net_request)?
.with_async_function("socket", net_socket)?
.with_async_function("serve", net_serve)?
.with_function("urlEncode", net_url_encode)?
.with_function("urlDecode", net_url_decode)?
.build_readonly()
}
fn net_json_encode<'lua>(
lua: &'lua Lua,
(val, pretty): (LuaValue<'lua>, Option<bool>),
) -> LuaResult<LuaString<'lua>> {
let config = EncodeDecodeConfig::from((EncodeDecodeFormat::Json, pretty.unwrap_or_default()));
encode(val, lua, config)
}
fn net_json_decode(lua: &Lua, json: BString) -> LuaResult<LuaValue> {
let config = EncodeDecodeConfig::from(EncodeDecodeFormat::Json);
decode(json, lua, config)
}
async fn net_request(lua: &Lua, config: RequestConfig) -> LuaResult<LuaTable> {
let client = NetClient::from_registry(lua);
// NOTE: We spawn the request as a background task to free up resources in lua
let res = lua.spawn(async move { client.request(config).await });
res.await?.into_lua_table(lua)
}
async fn net_socket(lua: &Lua, url: String) -> LuaResult<LuaTable> {
let (ws, _) = tokio_tungstenite::connect_async(url).await.into_lua_err()?;
NetWebSocket::new(ws).into_lua_table(lua)
}
async fn net_serve<'lua>(
lua: &'lua Lua,
(port, config): (u16, ServeConfig<'lua>),
) -> LuaResult<LuaTable<'lua>> {
serve(lua, port, config).await
}
fn net_url_encode<'lua>(
lua: &'lua Lua,
(lua_string, as_binary): (LuaString<'lua>, Option<bool>),
) -> LuaResult<LuaValue<'lua>> {
if matches!(as_binary, Some(true)) {
urlencoding::encode_binary(lua_string.as_bytes()).into_lua(lua)
} else {
urlencoding::encode(lua_string.to_str()?).into_lua(lua)
}
}
fn net_url_decode<'lua>(
lua: &'lua Lua,
(lua_string, as_binary): (LuaString<'lua>, Option<bool>),
) -> LuaResult<LuaValue<'lua>> {
if matches!(as_binary, Some(true)) {
urlencoding::decode_binary(lua_string.as_bytes()).into_lua(lua)
} else {
urlencoding::decode(lua_string.to_str()?)
.map_err(|e| LuaError::RuntimeError(format!("Encountered invalid encoding - {e}")))?
.into_lua(lua)
}
}