proxmox-rest-server/src/rest.rs

   1 use std::collections::HashMap;
   2 use std::future::Future;
   3 use std::hash::BuildHasher;
   4 use std::path::{Path, PathBuf};
   5 use std::pin::Pin;
   6 use std::sync::{Arc, Mutex};
   7 use std::task::{Context, Poll};
   8
   9 use anyhow::{bail, format_err, Error};
  10 use futures::future::{self, FutureExt, TryFutureExt};
  11 use futures::stream::TryStreamExt;
  12 use hyper::body::HttpBody;
  13 use hyper::header::{self, HeaderMap};
  14 use hyper::http::request::Parts;
  15 use hyper::{Body, Request, Response, StatusCode};
  16 use lazy_static::lazy_static;
  17 use regex::Regex;
  18 use serde_json::Value;
  19 use tokio::fs::File;
  20 use tokio::time::Instant;
  21 use url::form_urlencoded;
  22 use tower_service::Service;
  23
  24 use proxmox::api::schema::{
  25     parse_parameter_strings, parse_simple_value, verify_json_object, ObjectSchemaType,
  26     ParameterSchema,
  27 };
  28 use proxmox::api::{
  29     check_api_permission, ApiHandler, ApiMethod, HttpError, Permission, RpcEnvironment,
  30     RpcEnvironmentType, UserInformation,
  31 };
  32 use proxmox::http_err;
  33
  34 use pbs_tools::compression::{DeflateEncoder, Level};
  35 use pbs_tools::stream::AsyncReaderStream;
  36
  37 use crate::{
  38     ApiConfig, FileLogger, AuthError, RestEnvironment, CompressionMethod,
  39     extract_cookie, normalize_uri_path, formatter::*,
  40 };
  41
  42 extern "C" {
  43     fn tzset();
  44 }
  45
  46 struct AuthStringExtension(String);
  47
  48 struct EmptyUserInformation {}
  49
  50 impl UserInformation for EmptyUserInformation {
  51     fn is_superuser(&self, _userid: &str) -> bool { false }
  52     fn is_group_member(&self, _userid: &str, _group: &str) -> bool { false }
  53     fn lookup_privs(&self, _userid: &str, _path: &[&str]) -> u64 { 0 }
  54 }
  55
  56 /// REST server implementation (configured with [ApiConfig])
  57 ///
  58 /// This struct implements the [Service] trait in order to use it with
  59 /// [hyper::server::Builder::serve].
  60 pub struct RestServer {
  61     api_config: Arc<ApiConfig>,
  62 }
  63
  64 const MAX_URI_QUERY_LENGTH: usize = 3072;
  65 const CHUNK_SIZE_LIMIT: u64 = 32 * 1024;
  66
  67 impl RestServer {
  68     /// Creates a new instance.
  69     pub fn new(api_config: ApiConfig) -> Self {
  70         Self {
  71             api_config: Arc::new(api_config),
  72         }
  73     }
  74 }
  75
  76 impl Service<&Pin<Box<tokio_openssl::SslStream<tokio::net::TcpStream>>>>
  77     for RestServer
  78 {
  79     type Response = ApiService;
  80     type Error = Error;
  81     type Future = Pin<Box<dyn Future<Output = Result<ApiService, Error>> + Send>>;
  82
  83     fn poll_ready(&mut self, _cx: &mut Context) -> Poll<Result<(), Self::Error>> {
  84         Poll::Ready(Ok(()))
  85     }
  86
  87     fn call(
  88         &mut self,
  89         ctx: &Pin<Box<tokio_openssl::SslStream<tokio::net::TcpStream>>>,
  90     ) -> Self::Future {
  91         match ctx.get_ref().peer_addr() {
  92             Err(err) => future::err(format_err!("unable to get peer address - {}", err)).boxed(),
  93             Ok(peer) => future::ok(ApiService {
  94                 peer,
  95                 api_config: self.api_config.clone(),
  96             })
  97             .boxed(),
  98         }
  99     }
 100 }
 101
 102 impl Service<&hyper::server::conn::AddrStream> for RestServer {
 103     type Response = ApiService;
 104     type Error = Error;
 105     type Future = Pin<Box<dyn Future<Output = Result<ApiService, Error>> + Send>>;
 106
 107     fn poll_ready(&mut self, _cx: &mut Context) -> Poll<Result<(), Self::Error>> {
 108         Poll::Ready(Ok(()))
 109     }
 110
 111     fn call(&mut self, ctx: &hyper::server::conn::AddrStream) -> Self::Future {
 112         let peer =  ctx.remote_addr();
 113         future::ok(ApiService {
 114             peer,
 115             api_config: self.api_config.clone(),
 116         })
 117         .boxed()
 118     }
 119 }
 120
 121 impl Service<&tokio::net::UnixStream> for RestServer {
 122     type Response = ApiService;
 123     type Error = Error;
 124     type Future = Pin<Box<dyn Future<Output = Result<ApiService, Error>> + Send>>;
 125
 126     fn poll_ready(&mut self, _cx: &mut Context) -> Poll<Result<(), Self::Error>> {
 127         Poll::Ready(Ok(()))
 128     }
 129
 130     fn call(&mut self, _ctx: &tokio::net::UnixStream) -> Self::Future {
 131         // TODO: Find a way to actually represent the vsock peer in the ApiService struct - for now
 132         // it doesn't really matter, so just use a fake IP address
 133         let fake_peer = "0.0.0.0:807".parse().unwrap();
 134         future::ok(ApiService {
 135             peer: fake_peer,
 136             api_config: self.api_config.clone(),
 137         })
 138         .boxed()
 139     }
 140 }
 141
 142 /// Helper [Service] containing the peer Address
 143 ///
 144 /// The lower level connection [Service] implementation on
 145 /// [RestServer] extracts the peer address and return an [ApiService].
 146 pub struct ApiService {
 147     pub peer: std::net::SocketAddr,
 148     pub api_config: Arc<ApiConfig>,
 149 }
 150
 151 fn log_response(
 152     logfile: Option<&Arc<Mutex<FileLogger>>>,
 153     peer: &std::net::SocketAddr,
 154     method: hyper::Method,
 155     path_query: &str,
 156     resp: &Response<Body>,
 157     user_agent: Option<String>,
 158 ) {
 159     if resp.extensions().get::<NoLogExtension>().is_some() {
 160         return;
 161     };
 162
 163     // we also log URL-to-long requests, so avoid message bigger than PIPE_BUF (4k on Linux)
 164     // to profit from atomicty guarantees for O_APPEND opened logfiles
 165     let path = &path_query[..MAX_URI_QUERY_LENGTH.min(path_query.len())];
 166
 167     let status = resp.status();
 168     if !(status.is_success() || status.is_informational()) {
 169         let reason = status.canonical_reason().unwrap_or("unknown reason");
 170
 171         let message = match resp.extensions().get::<ErrorMessageExtension>() {
 172             Some(data) => &data.0,
 173             None => "request failed",
 174         };
 175
 176         log::error!(
 177             "{} {}: {} {}: [client {}] {}",
 178             method.as_str(),
 179             path,
 180             status.as_str(),
 181             reason,
 182             peer,
 183             message
 184         );
 185     }
 186     if let Some(logfile) = logfile {
 187         let auth_id = match resp.extensions().get::<AuthStringExtension>() {
 188             Some(AuthStringExtension(auth_id)) => auth_id.clone(),
 189             None => "-".to_string(),
 190         };
 191         let now = proxmox::tools::time::epoch_i64();
 192         // time format which apache/nginx use (by default), copied from pve-http-server
 193         let datetime = proxmox::tools::time::strftime_local("%d/%m/%Y:%H:%M:%S %z", now)
 194             .unwrap_or_else(|_| "-".to_string());
 195
 196         logfile.lock().unwrap().log(format!(
 197             "{} - {} [{}] \"{} {}\" {} {} {}",
 198             peer.ip(),
 199             auth_id,
 200             datetime,
 201             method.as_str(),
 202             path,
 203             status.as_str(),
 204             resp.body().size_hint().lower(),
 205             user_agent.unwrap_or_else(|| "-".to_string()),
 206         ));
 207     }
 208 }
 209
 210 fn get_proxied_peer(headers: &HeaderMap) -> Option<std::net::SocketAddr> {
 211     lazy_static! {
 212         static ref RE: Regex = Regex::new(r#"for="([^"]+)""#).unwrap();
 213     }
 214     let forwarded = headers.get(header::FORWARDED)?.to_str().ok()?;
 215     let capture = RE.captures(&forwarded)?;
 216     let rhost = capture.get(1)?.as_str();
 217
 218     rhost.parse().ok()
 219 }
 220
 221 fn get_user_agent(headers: &HeaderMap) -> Option<String> {
 222     let agent = headers.get(header::USER_AGENT)?.to_str();
 223     agent
 224         .map(|s| {
 225             let mut s = s.to_owned();
 226             s.truncate(128);
 227             s
 228         })
 229         .ok()
 230 }
 231
 232 impl Service<Request<Body>> for ApiService {
 233     type Response = Response<Body>;
 234     type Error = Error;
 235     #[allow(clippy::type_complexity)]
 236     type Future = Pin<Box<dyn Future<Output = Result<Self::Response, Self::Error>> + Send>>;
 237
 238     fn poll_ready(&mut self, _cx: &mut Context) -> Poll<Result<(), Self::Error>> {
 239         Poll::Ready(Ok(()))
 240     }
 241
 242     fn call(&mut self, req: Request<Body>) -> Self::Future {
 243         let path = req.uri().path_and_query().unwrap().as_str().to_owned();
 244         let method = req.method().clone();
 245         let user_agent = get_user_agent(req.headers());
 246
 247         let config = Arc::clone(&self.api_config);
 248         let peer = match get_proxied_peer(req.headers()) {
 249             Some(proxied_peer) => proxied_peer,
 250             None => self.peer,
 251         };
 252         async move {
 253             let response = match handle_request(Arc::clone(&config), req, &peer).await {
 254                 Ok(response) => response,
 255                 Err(err) => {
 256                     let (err, code) = match err.downcast_ref::<HttpError>() {
 257                         Some(apierr) => (apierr.message.clone(), apierr.code),
 258                         _ => (err.to_string(), StatusCode::BAD_REQUEST),
 259                     };
 260                     Response::builder()
 261                         .status(code)
 262                         .extension(ErrorMessageExtension(err.to_string()))
 263                         .body(err.into())?
 264                 }
 265             };
 266             let logger = config.get_access_log();
 267             log_response(logger, &peer, method, &path, &response, user_agent);
 268             Ok(response)
 269         }
 270         .boxed()
 271     }
 272 }
 273
 274 fn parse_query_parameters<S: 'static + BuildHasher + Send>(
 275     param_schema: ParameterSchema,
 276     form: &str, // x-www-form-urlencoded body data
 277     parts: &Parts,
 278     uri_param: &HashMap<String, String, S>,
 279 ) -> Result<Value, Error> {
 280     let mut param_list: Vec<(String, String)> = vec![];
 281
 282     if !form.is_empty() {
 283         for (k, v) in form_urlencoded::parse(form.as_bytes()).into_owned() {
 284             param_list.push((k, v));
 285         }
 286     }
 287
 288     if let Some(query_str) = parts.uri.query() {
 289         for (k, v) in form_urlencoded::parse(query_str.as_bytes()).into_owned() {
 290             if k == "_dc" {
 291                 continue;
 292             } // skip extjs "disable cache" parameter
 293             param_list.push((k, v));
 294         }
 295     }
 296
 297     for (k, v) in uri_param {
 298         param_list.push((k.clone(), v.clone()));
 299     }
 300
 301     let params = parse_parameter_strings(&param_list, param_schema, true)?;
 302
 303     Ok(params)
 304 }
 305
 306 async fn get_request_parameters<S: 'static + BuildHasher + Send>(
 307     param_schema: ParameterSchema,
 308     parts: Parts,
 309     req_body: Body,
 310     uri_param: HashMap<String, String, S>,
 311 ) -> Result<Value, Error> {
 312     let mut is_json = false;
 313
 314     if let Some(value) = parts.headers.get(header::CONTENT_TYPE) {
 315         match value.to_str().map(|v| v.split(';').next()) {
 316             Ok(Some("application/x-www-form-urlencoded")) => {
 317                 is_json = false;
 318             }
 319             Ok(Some("application/json")) => {
 320                 is_json = true;
 321             }
 322             _ => bail!("unsupported content type {:?}", value.to_str()),
 323         }
 324     }
 325
 326     let body = TryStreamExt::map_err(req_body, |err| {
 327         http_err!(BAD_REQUEST, "Problems reading request body: {}", err)
 328     })
 329     .try_fold(Vec::new(), |mut acc, chunk| async move {
 330         // FIXME: max request body size?
 331         if acc.len() + chunk.len() < 64 * 1024 {
 332             acc.extend_from_slice(&*chunk);
 333             Ok(acc)
 334         } else {
 335             Err(http_err!(BAD_REQUEST, "Request body too large"))
 336         }
 337     })
 338     .await?;
 339
 340     let utf8_data =
 341         std::str::from_utf8(&body).map_err(|err| format_err!("Request body not uft8: {}", err))?;
 342
 343     if is_json {
 344         let mut params: Value = serde_json::from_str(utf8_data)?;
 345         for (k, v) in uri_param {
 346             if let Some((_optional, prop_schema)) = param_schema.lookup(&k) {
 347                 params[&k] = parse_simple_value(&v, prop_schema)?;
 348             }
 349         }
 350         verify_json_object(&params, &param_schema)?;
 351         return Ok(params);
 352     } else {
 353         parse_query_parameters(param_schema, utf8_data, &parts, &uri_param)
 354     }
 355 }
 356
 357 struct NoLogExtension();
 358
 359 async fn proxy_protected_request(
 360     info: &'static ApiMethod,
 361     mut parts: Parts,
 362     req_body: Body,
 363     peer: &std::net::SocketAddr,
 364 ) -> Result<Response<Body>, Error> {
 365     let mut uri_parts = parts.uri.clone().into_parts();
 366
 367     uri_parts.scheme = Some(http::uri::Scheme::HTTP);
 368     uri_parts.authority = Some(http::uri::Authority::from_static("127.0.0.1:82"));
 369     let new_uri = http::Uri::from_parts(uri_parts).unwrap();
 370
 371     parts.uri = new_uri;
 372
 373     let mut request = Request::from_parts(parts, req_body);
 374     request.headers_mut().insert(
 375         header::FORWARDED,
 376         format!("for=\"{}\";", peer).parse().unwrap(),
 377     );
 378
 379     let reload_timezone = info.reload_timezone;
 380
 381     let resp = hyper::client::Client::new()
 382         .request(request)
 383         .map_err(Error::from)
 384         .map_ok(|mut resp| {
 385             resp.extensions_mut().insert(NoLogExtension());
 386             resp
 387         })
 388         .await?;
 389
 390     if reload_timezone {
 391         unsafe {
 392             tzset();
 393         }
 394     }
 395
 396     Ok(resp)
 397 }
 398
 399 pub(crate) async fn handle_api_request<Env: RpcEnvironment, S: 'static + BuildHasher + Send>(
 400     mut rpcenv: Env,
 401     info: &'static ApiMethod,
 402     formatter: &'static dyn OutputFormatter,
 403     parts: Parts,
 404     req_body: Body,
 405     uri_param: HashMap<String, String, S>,
 406 ) -> Result<Response<Body>, Error> {
 407     let delay_unauth_time = std::time::Instant::now() + std::time::Duration::from_millis(3000);
 408     let compression = extract_compression_method(&parts.headers);
 409
 410     let result = match info.handler {
 411         ApiHandler::AsyncHttp(handler) => {
 412             let params = parse_query_parameters(info.parameters, "", &parts, &uri_param)?;
 413             (handler)(parts, req_body, params, info, Box::new(rpcenv)).await
 414         }
 415         ApiHandler::Sync(handler) => {
 416             let params =
 417                 get_request_parameters(info.parameters, parts, req_body, uri_param).await?;
 418             (handler)(params, info, &mut rpcenv).map(|data| formatter.format_data(data, &rpcenv))
 419         }
 420         ApiHandler::Async(handler) => {
 421             let params =
 422                 get_request_parameters(info.parameters, parts, req_body, uri_param).await?;
 423             (handler)(params, info, &mut rpcenv)
 424                 .await
 425                 .map(|data| formatter.format_data(data, &rpcenv))
 426         }
 427     };
 428
 429     let mut resp = match result {
 430         Ok(resp) => resp,
 431         Err(err) => {
 432             if let Some(httperr) = err.downcast_ref::<HttpError>() {
 433                 if httperr.code == StatusCode::UNAUTHORIZED {
 434                     tokio::time::sleep_until(Instant::from_std(delay_unauth_time)).await;
 435                 }
 436             }
 437             formatter.format_error(err)
 438         }
 439     };
 440
 441     let resp = match compression {
 442         Some(CompressionMethod::Deflate) => {
 443             resp.headers_mut().insert(
 444                 header::CONTENT_ENCODING,
 445                 CompressionMethod::Deflate.content_encoding(),
 446             );
 447             resp.map(|body| {
 448                 Body::wrap_stream(DeflateEncoder::with_quality(
 449                     TryStreamExt::map_err(body, |err| {
 450                         proxmox::io_format_err!("error during compression: {}", err)
 451                     }),
 452                     Level::Default,
 453                 ))
 454             })
 455         }
 456         None => resp,
 457     };
 458
 459     if info.reload_timezone {
 460         unsafe {
 461             tzset();
 462         }
 463     }
 464
 465     Ok(resp)
 466 }
 467
 468
 469 fn extension_to_content_type(filename: &Path) -> (&'static str, bool) {
 470     if let Some(ext) = filename.extension().and_then(|osstr| osstr.to_str()) {
 471         return match ext {
 472             "css" => ("text/css", false),
 473             "html" => ("text/html", false),
 474             "js" => ("application/javascript", false),
 475             "json" => ("application/json", false),
 476             "map" => ("application/json", false),
 477             "png" => ("image/png", true),
 478             "ico" => ("image/x-icon", true),
 479             "gif" => ("image/gif", true),
 480             "svg" => ("image/svg+xml", false),
 481             "jar" => ("application/java-archive", true),
 482             "woff" => ("application/font-woff", true),
 483             "woff2" => ("application/font-woff2", true),
 484             "ttf" => ("application/font-snft", true),
 485             "pdf" => ("application/pdf", true),
 486             "epub" => ("application/epub+zip", true),
 487             "mp3" => ("audio/mpeg", true),
 488             "oga" => ("audio/ogg", true),
 489             "tgz" => ("application/x-compressed-tar", true),
 490             _ => ("application/octet-stream", false),
 491         };
 492     }
 493
 494     ("application/octet-stream", false)
 495 }
 496
 497 async fn simple_static_file_download(
 498     filename: PathBuf,
 499     content_type: &'static str,
 500     compression: Option<CompressionMethod>,
 501 ) -> Result<Response<Body>, Error> {
 502     use tokio::io::AsyncReadExt;
 503
 504     let mut file = File::open(filename)
 505         .await
 506         .map_err(|err| http_err!(BAD_REQUEST, "File open failed: {}", err))?;
 507
 508     let mut data: Vec<u8> = Vec::new();
 509
 510     let mut response = match compression {
 511         Some(CompressionMethod::Deflate) => {
 512             let mut enc = DeflateEncoder::with_quality(data, Level::Default);
 513             enc.compress_vec(&mut file, CHUNK_SIZE_LIMIT as usize)
 514                 .await?;
 515             let mut response = Response::new(enc.into_inner().into());
 516             response.headers_mut().insert(
 517                 header::CONTENT_ENCODING,
 518                 CompressionMethod::Deflate.content_encoding(),
 519             );
 520             response
 521         }
 522         None => {
 523             file.read_to_end(&mut data)
 524                 .await
 525                 .map_err(|err| http_err!(BAD_REQUEST, "File read failed: {}", err))?;
 526             Response::new(data.into())
 527         }
 528     };
 529
 530     response.headers_mut().insert(
 531         header::CONTENT_TYPE,
 532         header::HeaderValue::from_static(content_type),
 533     );
 534
 535     Ok(response)
 536 }
 537
 538 async fn chuncked_static_file_download(
 539     filename: PathBuf,
 540     content_type: &'static str,
 541     compression: Option<CompressionMethod>,
 542 ) -> Result<Response<Body>, Error> {
 543     let mut resp = Response::builder()
 544         .status(StatusCode::OK)
 545         .header(header::CONTENT_TYPE, content_type);
 546
 547     let file = File::open(filename)
 548         .await
 549         .map_err(|err| http_err!(BAD_REQUEST, "File open failed: {}", err))?;
 550
 551     let body = match compression {
 552         Some(CompressionMethod::Deflate) => {
 553             resp = resp.header(
 554                 header::CONTENT_ENCODING,
 555                 CompressionMethod::Deflate.content_encoding(),
 556             );
 557             Body::wrap_stream(DeflateEncoder::with_quality(
 558                 AsyncReaderStream::new(file),
 559                 Level::Default,
 560             ))
 561         }
 562         None => Body::wrap_stream(AsyncReaderStream::new(file)),
 563     };
 564
 565     Ok(resp.body(body).unwrap())
 566 }
 567
 568 async fn handle_static_file_download(
 569     filename: PathBuf,
 570     compression: Option<CompressionMethod>,
 571 ) -> Result<Response<Body>, Error> {
 572     let metadata = tokio::fs::metadata(filename.clone())
 573         .map_err(|err| http_err!(BAD_REQUEST, "File access problems: {}", err))
 574         .await?;
 575
 576     let (content_type, nocomp) = extension_to_content_type(&filename);
 577     let compression = if nocomp { None } else { compression };
 578
 579     if metadata.len() < CHUNK_SIZE_LIMIT {
 580         simple_static_file_download(filename, content_type, compression).await
 581     } else {
 582         chuncked_static_file_download(filename, content_type, compression).await
 583     }
 584 }
 585
 586 fn extract_lang_header(headers: &http::HeaderMap) -> Option<String> {
 587     if let Some(Ok(cookie)) = headers.get("COOKIE").map(|v| v.to_str()) {
 588         return extract_cookie(cookie, "PBSLangCookie");
 589     }
 590     None
 591 }
 592
 593 // FIXME: support handling multiple compression methods
 594 fn extract_compression_method(headers: &http::HeaderMap) -> Option<CompressionMethod> {
 595     if let Some(Ok(encodings)) = headers.get(header::ACCEPT_ENCODING).map(|v| v.to_str()) {
 596         for encoding in encodings.split(&[',', ' '][..]) {
 597             if let Ok(method) = encoding.parse() {
 598                 return Some(method);
 599             }
 600         }
 601     }
 602     None
 603 }
 604
 605 async fn handle_request(
 606     api: Arc<ApiConfig>,
 607     req: Request<Body>,
 608     peer: &std::net::SocketAddr,
 609 ) -> Result<Response<Body>, Error> {
 610     let (parts, body) = req.into_parts();
 611     let method = parts.method.clone();
 612     let (path, components) = normalize_uri_path(parts.uri.path())?;
 613
 614     let comp_len = components.len();
 615
 616     let query = parts.uri.query().unwrap_or_default();
 617     if path.len() + query.len() > MAX_URI_QUERY_LENGTH {
 618         return Ok(Response::builder()
 619             .status(StatusCode::URI_TOO_LONG)
 620             .body("".into())
 621             .unwrap());
 622     }
 623
 624     let env_type = api.env_type();
 625     let mut rpcenv = RestEnvironment::new(env_type, Arc::clone(&api));
 626
 627     rpcenv.set_client_ip(Some(*peer));
 628
 629     let auth = &api.api_auth;
 630
 631     let delay_unauth_time = std::time::Instant::now() + std::time::Duration::from_millis(3000);
 632     let access_forbidden_time = std::time::Instant::now() + std::time::Duration::from_millis(500);
 633
 634     if comp_len >= 1 && components[0] == "api2" {
 635         if comp_len >= 2 {
 636             let format = components[1];
 637
 638             let formatter: &dyn OutputFormatter = match format {
 639                 "json" => JSON_FORMATTER,
 640                 "extjs" => EXTJS_FORMATTER,
 641                 _ => bail!("Unsupported output format '{}'.", format),
 642             };
 643
 644             let mut uri_param = HashMap::new();
 645             let api_method = api.find_method(&components[2..], method.clone(), &mut uri_param);
 646
 647             let mut auth_required = true;
 648             if let Some(api_method) = api_method {
 649                 if let Permission::World = *api_method.access.permission {
 650                     auth_required = false; // no auth for endpoints with World permission
 651                 }
 652             }
 653
 654             let mut user_info: Box<dyn UserInformation + Send + Sync> = Box::new(EmptyUserInformation {});
 655
 656             if auth_required {
 657                 match auth.check_auth(&parts.headers, &method) {
 658                     Ok((authid, info)) => {
 659                         rpcenv.set_auth_id(Some(authid));
 660                         user_info = info;
 661                     }
 662                     Err(auth_err) => {
 663                         let err = match auth_err {
 664                             AuthError::Generic(err) => err,
 665                             AuthError::NoData => {
 666                                 format_err!("no authentication credentials provided.")
 667                             }
 668                         };
 669                         // fixme: log Username??
 670                         rpcenv.log_failed_auth(None, &err.to_string());
 671
 672                         // always delay unauthorized calls by 3 seconds (from start of request)
 673                         let err = http_err!(UNAUTHORIZED, "authentication failed - {}", err);
 674                         tokio::time::sleep_until(Instant::from_std(delay_unauth_time)).await;
 675                         return Ok(formatter.format_error(err));
 676                     }
 677                 }
 678             }
 679
 680             match api_method {
 681                 None => {
 682                     let err = http_err!(NOT_FOUND, "Path '{}' not found.", path);
 683                     return Ok(formatter.format_error(err));
 684                 }
 685                 Some(api_method) => {
 686                     let auth_id = rpcenv.get_auth_id();
 687                     let user_info = user_info;
 688
 689                     if !check_api_permission(
 690                         api_method.access.permission,
 691                         auth_id.as_deref(),
 692                         &uri_param,
 693                         user_info.as_ref(),
 694                     ) {
 695                         let err = http_err!(FORBIDDEN, "permission check failed");
 696                         tokio::time::sleep_until(Instant::from_std(access_forbidden_time)).await;
 697                         return Ok(formatter.format_error(err));
 698                     }
 699
 700                     let result = if api_method.protected && env_type == RpcEnvironmentType::PUBLIC {
 701                         proxy_protected_request(api_method, parts, body, peer).await
 702                     } else {
 703                         handle_api_request(rpcenv, api_method, formatter, parts, body, uri_param)
 704                             .await
 705                     };
 706
 707                     let mut response = match result {
 708                         Ok(resp) => resp,
 709                         Err(err) => formatter.format_error(err),
 710                     };
 711
 712                     if let Some(auth_id) = auth_id {
 713                         response.extensions_mut().insert(AuthStringExtension(auth_id));
 714                     }
 715
 716                     return Ok(response);
 717                 }
 718             }
 719         }
 720     } else {
 721         // not Auth required for accessing files!
 722
 723         if method != hyper::Method::GET {
 724             bail!("Unsupported HTTP method {}", method);
 725         }
 726
 727         if comp_len == 0 {
 728             let language = extract_lang_header(&parts.headers);
 729             match auth.check_auth(&parts.headers, &method) {
 730                 Ok((auth_id, _user_info)) => {
 731                     return Ok(api.get_index(Some(auth_id), language, parts));
 732                 }
 733                 Err(AuthError::Generic(_)) => {
 734                     tokio::time::sleep_until(Instant::from_std(delay_unauth_time)).await;
 735                 }
 736                 Err(AuthError::NoData) => {}
 737             }
 738             return Ok(api.get_index(None, language, parts));
 739         } else {
 740             let filename = api.find_alias(&components);
 741             let compression = extract_compression_method(&parts.headers);
 742             return handle_static_file_download(filename, compression).await;
 743         }
 744     }
 745
 746     Err(http_err!(NOT_FOUND, "Path '{}' not found.", path))
 747 }