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Remove old rust code

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Jan-Erik Rediger 2024-06-01 16:46:18 +02:00
parent a474d3e408
commit a0a8287b1b
4 changed files with 0 additions and 1227 deletions

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View file

@ -1,14 +0,0 @@
[package]
name = "backend"
version = "0.1.0"
edition = "2021"
[dependencies]
libc = "0.2.155"
tempfile = "3.10.1"
axum = "0.7.5"
serde = { version = "1.0.202", features = ["derive"] }
tokio = { version = "1.37.0", features = ["rt-multi-thread"] }
tower-http = { version = "0.5.2", features = ["trace", "cors"] }
tracing = "0.1.40"
tracing-subscriber = { version = "0.3.18", features = ["env-filter"] }

View file

@ -1,90 +0,0 @@
use std::collections::HashMap;
use std::time::Instant;
use axum::{
extract::MatchedPath,
http::{Request, StatusCode},
routing::post,
Json, Router,
};
use serde::{Deserialize, Serialize};
use tower_http::trace::TraceLayer;
use tower_http::cors::CorsLayer;
use tracing::info_span;
use tracing_subscriber::{layer::SubscriberExt, util::SubscriberInitExt};
mod sandbox;
#[derive(Default, Debug, Clone, PartialEq, Deserialize)]
pub struct ExecRequest {
pub sandbox: String,
pub command: String,
pub files: HashMap<String, String>,
}
#[derive(Default, Debug, Clone, PartialEq, Serialize)]
pub struct ExecResponse {
pub id: String,
pub ok: bool,
pub duration: u64,
pub stdout: String,
pub stderr: String,
}
async fn exec(Json(req): Json<ExecRequest>) -> (StatusCode, Json<ExecResponse>) {
let code = req.files.get("").unwrap();
let now = Instant::now();
let output = sandbox::run_code(code);
let duration = now.elapsed().as_millis() as u64;
let ok = output.status.success();
let stdout = String::from_utf8_lossy(&output.stdout).to_string();
let stderr = String::from_utf8_lossy(&output.stderr).to_string();
let resp = ExecResponse {
id: "random".to_string(),
ok,
duration,
stdout,
stderr,
};
(StatusCode::OK, Json(resp))
}
#[tokio::main]
async fn main() {
tracing_subscriber::registry()
.with(
tracing_subscriber::EnvFilter::try_from_default_env().unwrap_or_else(|_| {
// axum logs rejections from built-in extractors with the `axum::rejection`
// target, at `TRACE` level. `axum::rejection=trace` enables showing those events
"backend=debug,tower_http=debug,axum::rejection=trace".into()
}),
)
.with(tracing_subscriber::fmt::layer())
.init();
let app = Router::new().route("/v1/exec", post(exec))
.layer(CorsLayer::permissive())
.layer(
TraceLayer::new_for_http().make_span_with(|request: &Request<_>| {
let matched_path = request
.extensions()
.get::<MatchedPath>()
.map(MatchedPath::as_str);
info_span!(
"http_request",
method = ?request.method(),
matched_path,
some_other_field = tracing::field::Empty,
)
}),
);
let listener = tokio::net::TcpListener::bind("0.0.0.0:8080").await.unwrap();
tracing::debug!("listening on {}", listener.local_addr().unwrap());
axum::serve(listener, app).await.unwrap();
}

View file

@ -1,136 +0,0 @@
use std::fs::File;
use std::io::Write;
use std::process::Command;
use tempfile::{TempDir, NamedTempFile};
#[rustfmt::skip]
const STATIC_ARGS: &[&str] = &[
"--ro-bind", "/usr", "/usr",
"--dir", "/tmp",
"--dir", "/var",
"--symlink", "../tmp", "/var/tmp",
"--proc", "/proc",
"--dev", "/dev",
"--ro-bind", "/etc/resolv.conf", "/etc/resolv.conf",
"--symlink", "usr/lib", "/lib",
"--symlink", "usr/lib64", "/lib64",
"--symlink", "usr/bin", "/bin",
"--symlink", "usr/sbin", "/sbin",
"--unshare-all",
"--die-with-parent",
"--clearenv",
"--setenv", "PATH", "/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin",
"--setenv", "HAREPATH", "/usr/local/src/hare/stdlib",
];
const HARE_COMMAND: &str = "/usr/local/bin/hare";
/// Default command timeout in seconds.
const DEFAULT_TIMEOUT: u32 = 30;
fn passwd_files(uid: u32, gid: u32) -> (NamedTempFile, NamedTempFile, Vec<String>) {
let uid = uid.to_string();
let passwd = Command::new("getent")
.args(["passwd", &uid, "65534"])
.output()
.expect("failed to run getent passwd");
let gid = gid.to_string();
let group = Command::new("getent")
.args(["group", &gid, "65534"])
.output()
.expect("failed to run getent passwd");
let mut passwd_file = tempfile::NamedTempFile::new().unwrap();
passwd_file.write_all(&passwd.stdout).unwrap();
passwd_file.flush().unwrap();
let mut group_file = tempfile::NamedTempFile::new().unwrap();
group_file.write_all(&group.stdout).unwrap();
group_file.flush().unwrap();
let args = vec![
"--ro-bind".to_string(),
passwd_file.path().display().to_string(),
"/etc/passwd".to_string(),
"--ro-bind".to_string(),
group_file.path().display().to_string(),
"/etc/group".to_string(),
];
(passwd_file, group_file, args)
}
fn home_dir(uid: u32) -> Vec<String> {
let user_dir = format!("/run/user/{uid}");
let home_dir = format!("{user_dir}/home");
vec![
"--dir".to_string(),
home_dir.clone(),
"--setenv".to_string(),
"HOME".to_string(),
home_dir,
"--setenv".to_string(),
"XDG_RUNTIME_DIR".to_string(),
user_dir,
]
}
fn shared_app_dir() -> (TempDir, Vec<String>) {
let tmp_app_dir = tempfile::tempdir().unwrap();
let app_dir_path = tmp_app_dir.path().display().to_string();
(
tmp_app_dir,
vec![
"--bind".to_string(),
app_dir_path,
"/app".to_string(),
"--chdir".to_string(),
"/app".to_string(),
],
)
}
fn command(app_file: &str) -> Vec<String> {
vec![
"/usr/bin/timeout".to_string(), DEFAULT_TIMEOUT.to_string(),
HARE_COMMAND.to_string(),
"run".to_string(),
app_file.to_string(),
]
}
fn getids() -> (u32, u32) {
unsafe { (libc::getuid(), libc::getgid()) }
}
pub fn run_code(code: &str) -> std::process::Output {
let (uid, gid) = getids();
let mut bwrap_cmd = Command::new("bwrap");
bwrap_cmd.args(STATIC_ARGS);
let (app_dir, dir_arg) = shared_app_dir();
bwrap_cmd.args(dir_arg);
let home_args = home_dir(uid);
bwrap_cmd.args(home_args);
let (_passwd, _group, file_args) = passwd_files(uid, gid);
bwrap_cmd.args(file_args);
{
let code_path = app_dir.path().join("main.ha");
let mut code_file = File::create(code_path).unwrap();
code_file.write_all(code.as_bytes()).unwrap();
}
let cmd_args = command("/app/main.ha");
bwrap_cmd.args(cmd_args);
let output = bwrap_cmd.output().expect("running bwrap failed");
output
}