2025-03-24 23:54:00 +03:00

224 lines
6.8 KiB
Rust

use rocket::fs::NamedFile;
use rocket::http::Method;
use rocket::http::Status;
use rocket::response::{Responder, status};
use rocket::serde::{Deserialize, json::Json};
use rocket::{self, get, launch, post, routes};
use rocket_cors::{AllowedOrigins, CorsOptions};
use std::env;
use std::path::Path;
#[get("/")]
fn index() -> &'static str {
"Hello, world!"
}
#[derive(Deserialize)]
#[serde(crate = "rocket::serde")]
struct GenerationRequest<'r> {
directory: &'r str,
common_name: &'r str,
}
#[derive(Responder)]
enum GenerationError {
#[response(status = 500, content_type = "json")]
InternalError(String),
#[response(status = 404, content_type = "json")]
DirectoryNotFoundError(String),
}
fn get_base_directory() -> String {
match env::var("GENERATION_BASE_DIRECTORY") {
Ok(directory) => directory,
Err(_) => "base/".into(),
}
}
async fn check_is_valid_directory(
directory: impl AsRef<Path> + Clone,
) -> Result<(), GenerationError> {
match tokio::fs::metadata(directory.clone()).await {
Ok(metadata) => {
if !metadata.is_dir() {
return Err(GenerationError::DirectoryNotFoundError(
"The specified directory is not valid".into(),
));
}
}
Err(_) => {
return Err(GenerationError::DirectoryNotFoundError(
"The specified directory is not exists".into(),
));
}
};
// Check if the directory contains a 'vars.bat' and 'template.ovpn' files
const REQUIRED_FILES: [&str; 2] = ["vars.bat", "template.ovpn"];
for file_name in REQUIRED_FILES.iter() {
let file_path = directory.as_ref().join(file_name);
match tokio::fs::metadata(&file_path).await {
Ok(metadata) => {
if !metadata.is_file() {
return Err(GenerationError::DirectoryNotFoundError(format!(
"The specified directory is not valid, invalid file: {}",
file_name
)));
}
}
Err(_) => {
return Err(GenerationError::DirectoryNotFoundError(format!(
"The specified directory is not valid, missing file: {}",
file_name
)));
}
};
}
Ok(())
}
#[get("/get")]
async fn list_directories() -> Result<Json<Vec<String>>, status::Custom<String>> {
let mut reader = tokio::fs::read_dir(get_base_directory())
.await
.map_err(|e| {
status::Custom(
Status::InternalServerError,
format!("Failed to read directory: {}", e),
)
})?;
let mut directories = Vec::new();
while let Ok(Some(entry)) = reader.next_entry().await {
let path = entry.path();
if check_is_valid_directory(&path).await.is_ok() {
if let Some(name) = path.file_name() {
directories.push(name.to_str().unwrap().to_string())
}
}
}
Ok(Json(directories))
}
#[get("/get/<directory>")]
async fn list_directory(directory: &str) -> Result<Json<Vec<String>>, status::Custom<String>> {
let base = get_base_directory();
let dir = Path::new(&base).join(directory);
if check_is_valid_directory(&dir).await.is_err() {
return Err(status::Custom(
Status::BadRequest,
"The specified directory is not valid".into(),
));
}
let dir = dir.join("config");
let mut reader = tokio::fs::read_dir(dir).await.map_err(|e| {
status::Custom(
Status::InternalServerError,
format!("Failed to read directory: {}", e),
)
})?;
let mut files = Vec::new();
while let Ok(Some(entry)) = reader.next_entry().await {
let path = entry.path();
if let Ok(meta) = path.metadata() {
if !meta.is_file() {
continue;
}
if let Some(ext) = path.extension() {
if ext.to_str().unwrap() != "ovpn" {
continue;
};
if let Some(name) = path.file_name() {
files.push(name.to_str().unwrap().to_string())
}
}
}
}
Ok(Json(files))
}
#[get("/get/<directory>/<file>")]
async fn get_file(directory: &str, file: &str) -> Result<NamedFile, status::NotFound<String>> {
let dir = Path::new(&get_base_directory()).join(directory);
if check_is_valid_directory(&dir).await.is_err() {
return Err(status::NotFound(
"The specified directory is not valid".into(),
));
}
let dir = dir.join("config");
let path = dir.join(file);
NamedFile::open(&path)
.await
.map_err(|e| status::NotFound(e.to_string()))
}
#[post("/generate", data = "<request>")]
async fn generate(request: Json<GenerationRequest<'_>>) -> Result<NamedFile, GenerationError> {
let dir = Path::new(&get_base_directory()).join(request.directory);
check_is_valid_directory(dir.clone()).await?;
let generator_bin = env::var("GENERATOR_BIN").unwrap_or("peazyrsa".into());
let mut cmd = tokio::process::Command::new(generator_bin);
if env::var("USE_OPENSSL").unwrap_or("no".into()) == "yes" {
let openssl_bin = env::var("OPENSSL_BIN").unwrap_or("openssl".into());
cmd.arg("--with-openssl").arg(openssl_bin);
}
cmd.arg("-d").arg(&dir).arg(request.common_name);
// execute the command and check error code
let status = cmd
.status()
.await
.map_err(|e| GenerationError::InternalError(format!("Failed to execute command: {}", e)))?;
if !status.success() {
return Err(GenerationError::InternalError(format!(
"Command failed with status: {}",
status
)));
}
// check output file exists
let output_file = dir
.join("config")
.join(format!("{}.ovpn", request.common_name));
if !output_file.exists() {
return Err(GenerationError::InternalError(
"Output file not found".into(),
));
}
match NamedFile::open(output_file).await {
Err(e) => Err(GenerationError::InternalError(format!(
"Failed to open output file: {}",
e
))),
Ok(f) => Ok(f),
}
}
#[launch]
fn rocket() -> _ {
let cors = CorsOptions::default()
.allowed_origins(AllowedOrigins::all())
.allowed_methods(
vec![Method::Get, Method::Post]
.into_iter()
.map(From::from)
.collect(),
)
.allow_credentials(true);
rocket::build()
.mount(
"/api/v1",
routes![index, list_directories, list_directory, get_file, generate],
)
.attach(cors.to_cors().unwrap())
}