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#![cfg_attr(io_lifetimes_use_std, feature(io_safety))]
pub mod clocks;
pub mod dir;
pub mod file;
pub mod net;
pub mod sched;
pub mod stdio;
pub use cap_std::ambient_authority;
pub use cap_std::fs::Dir;
pub use cap_std::net::TcpListener;
pub use clocks::clocks_ctx;
pub use sched::sched_ctx;
use crate::net::Socket;
use cap_rand::RngCore;
use std::path::Path;
use wasi_common::{file::FileCaps, table::Table, Error, WasiCtx, WasiFile};
pub struct WasiCtxBuilder(WasiCtx);
impl WasiCtxBuilder {
pub fn new() -> Self {
WasiCtxBuilder(WasiCtx::new(
random_ctx(),
clocks_ctx(),
sched_ctx(),
Table::new(),
))
}
pub fn env(mut self, var: &str, value: &str) -> Result<Self, wasi_common::StringArrayError> {
self.0.push_env(var, value)?;
Ok(self)
}
pub fn envs(mut self, env: &[(String, String)]) -> Result<Self, wasi_common::StringArrayError> {
for (k, v) in env {
self.0.push_env(k, v)?;
}
Ok(self)
}
pub fn inherit_env(mut self) -> Result<Self, wasi_common::StringArrayError> {
for (key, value) in std::env::vars() {
self.0.push_env(&key, &value)?;
}
Ok(self)
}
pub fn arg(mut self, arg: &str) -> Result<Self, wasi_common::StringArrayError> {
self.0.push_arg(arg)?;
Ok(self)
}
pub fn args(mut self, arg: &[String]) -> Result<Self, wasi_common::StringArrayError> {
for a in arg {
self.0.push_arg(&a)?;
}
Ok(self)
}
pub fn inherit_args(mut self) -> Result<Self, wasi_common::StringArrayError> {
for arg in std::env::args() {
self.0.push_arg(&arg)?;
}
Ok(self)
}
pub fn stdin(mut self, f: Box<dyn WasiFile>) -> Self {
self.0.set_stdin(f);
self
}
pub fn stdout(mut self, f: Box<dyn WasiFile>) -> Self {
self.0.set_stdout(f);
self
}
pub fn stderr(mut self, f: Box<dyn WasiFile>) -> Self {
self.0.set_stderr(f);
self
}
pub fn inherit_stdin(self) -> Self {
self.stdin(Box::new(crate::stdio::stdin()))
}
pub fn inherit_stdout(self) -> Self {
self.stdout(Box::new(crate::stdio::stdout()))
}
pub fn inherit_stderr(self) -> Self {
self.stderr(Box::new(crate::stdio::stderr()))
}
pub fn inherit_stdio(self) -> Self {
self.inherit_stdin().inherit_stdout().inherit_stderr()
}
pub fn preopened_dir(mut self, dir: Dir, guest_path: impl AsRef<Path>) -> Result<Self, Error> {
let dir = Box::new(crate::dir::Dir::from_cap_std(dir));
self.0.push_preopened_dir(dir, guest_path)?;
Ok(self)
}
pub fn preopened_socket(mut self, fd: u32, socket: impl Into<Socket>) -> Result<Self, Error> {
let socket: Socket = socket.into();
let file: Box<dyn WasiFile> = socket.into();
let caps = FileCaps::FDSTAT_SET_FLAGS
| FileCaps::FILESTAT_GET
| FileCaps::READ
| FileCaps::POLL_READWRITE;
self.0.insert_file(fd, file, caps);
Ok(self)
}
pub fn build(self) -> WasiCtx {
self.0
}
}
pub fn random_ctx() -> Box<dyn RngCore + Send + Sync> {
Box::new(cap_rand::rngs::OsRng::default(ambient_authority()))
}