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