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proxmox-rest-server: use new ServerAdapter trait instead of callbacks 

Async callbacks are a PITA, so we now pass a single trait object which
implements check_auth and get_index.
This commit is contained in:
Dietmar Maurer 2021-10-05 11:01:05 +02:00
parent 48176b0a77
commit 608806e884
9 changed files with 238 additions and 209 deletions
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60
proxmox-rest-server/examples/minimal-rest-server.rs
View File

@ -1,20 +1,24 @@
use std::sync::{Arc, Mutex};
use std::sync::Mutex;
use std::collections::HashMap;
use std::future::Future;
use std::pin::Pin;
use anyhow::{bail, format_err, Error};
use lazy_static::lazy_static;
use hyper::{Body, Response, Method};
use http::request::Parts;
use http::HeaderMap;
use proxmox::api::{api, router::SubdirMap, Router, RpcEnvironmentType, UserInformation};
use proxmox::list_subdirs_api_method;
use proxmox_rest_server::{ApiAuth, ApiConfig, AuthError, RestServer, RestEnvironment};
// Create a Dummy User info and auth system
// Normally this would check and authenticate the user
use proxmox_rest_server::{ServerAdapter, ApiConfig, AuthError, RestServer, RestEnvironment};
// Create a Dummy User information system
struct DummyUserInfo;
impl UserInformation for DummyUserInfo {
fn is_superuser(&self, _userid: &str) -> bool {
// Always return true here, so we have access to everthing
true
}
fn is_group_member(&self, _userid: &str, group: &str) -> bool {
@ -25,14 +29,17 @@ impl UserInformation for DummyUserInfo {
}
}
struct DummyAuth;
struct MinimalServer;
impl ApiAuth for DummyAuth {
fn check_auth<'a>(
&'a self,
_headers: &'a http::HeaderMap,
_method: &'a hyper::Method,
) -> Pin<Box<dyn Future<Output = Result<(String, Box<dyn UserInformation + Sync + Send>), AuthError>> + Send + 'a>> {
// implement the server adapter
impl ServerAdapter for MinimalServer {
// normally this would check and authenticate the user
fn check_auth(
&self,
_headers: &HeaderMap,
_method: &Method,
) -> Pin<Box<dyn Future<Output = Result<(String, Box<dyn UserInformation + Sync + Send>), AuthError>> + Send>> {
Box::pin(async move {
// get some global/cached userinfo
let userinfo: Box<dyn UserInformation + Sync + Send> = Box::new(DummyUserInfo);
@ -40,21 +47,21 @@ impl ApiAuth for DummyAuth {
Ok(("User".to_string(), userinfo))
})
}
}
// this should return the index page of the webserver
// iow. what the user browses to
fn get_index<'a>(
_env: RestEnvironment,
_parts: http::request::Parts,
) -> Pin<Box<dyn Future<Output = http::Response<hyper::Body>> + Send + 'a>> {
Box::pin(async move {
// build an index page
http::Response::builder()
.body("hello world".into())
.unwrap()
})
// this should return the index page of the webserver
// iow. what the user browses to
fn get_index(
&self,
_env: RestEnvironment,
_parts: Parts,
) -> Pin<Box<dyn Future<Output = Response<Body>> + Send>> {
Box::pin(async move {
// build an index page
http::Response::builder()
.body("hello world".into())
.unwrap()
})
}
}
// a few examples on how to do api calls with the Router
@ -190,8 +197,7 @@ async fn run() -> Result<(), Error> {
"/var/tmp/",
&ROUTER,
RpcEnvironmentType::PUBLIC,
Arc::new(DummyAuth {}),
&get_index,
MinimalServer,
)?;
let rest_server = RestServer::new(config);

17
proxmox-rest-server/src/api_config.rs
View File

@ -3,7 +3,6 @@ use std::path::PathBuf;
use std::time::SystemTime;
use std::fs::metadata;
use std::sync::{Arc, Mutex, RwLock};
use std::future::Future;
use std::pin::Pin;
use anyhow::{bail, Error, format_err};
@ -16,9 +15,8 @@ use serde::Serialize;
use proxmox::api::{ApiMethod, Router, RpcEnvironmentType, UserInformation};
use proxmox::tools::fs::{create_path, CreateOptions};
use crate::{ApiAuth, AuthError, FileLogger, FileLogOptions, CommandSocket, RestEnvironment};
use crate::{ServerAdapter, AuthError, FileLogger, FileLogOptions, CommandSocket, RestEnvironment};
pub type GetIndexFn = &'static (dyn Fn(RestEnvironment, Parts) -> Pin<Box<dyn Future<Output = Response<Body>> + Send>> + Send + Sync);
/// REST server configuration
pub struct ApiConfig {
@ -30,8 +28,7 @@ pub struct ApiConfig {
template_files: RwLock<HashMap<String, (SystemTime, PathBuf)>>,
request_log: Option<Arc<Mutex<FileLogger>>>,
auth_log: Option<Arc<Mutex<FileLogger>>>,
api_auth: Arc<dyn ApiAuth + Send + Sync>,
get_index_fn: GetIndexFn,
adapter: Pin<Box<dyn ServerAdapter + Send + Sync>>,
}
impl ApiConfig {
@ -53,8 +50,7 @@ impl ApiConfig {
basedir: B,
router: &'static Router,
env_type: RpcEnvironmentType,
api_auth: Arc<dyn ApiAuth + Send + Sync>,
get_index_fn: GetIndexFn,
adapter: impl ServerAdapter + 'static,
) -> Result<Self, Error> {
Ok(Self {
basedir: basedir.into(),
@ -65,8 +61,7 @@ impl ApiConfig {
template_files: RwLock::new(HashMap::new()),
request_log: None,
auth_log: None,
api_auth,
get_index_fn,
adapter: Box::pin(adapter),
})
}
@ -75,7 +70,7 @@ impl ApiConfig {
rest_env: RestEnvironment,
parts: Parts,
) -> Response<Body> {
(self.get_index_fn)(rest_env, parts).await
self.adapter.get_index(rest_env, parts).await
}
pub(crate) async fn check_auth(
@ -83,7 +78,7 @@ impl ApiConfig {
headers: &http::HeaderMap,
method: &hyper::Method,
) -> Result<(String, Box<dyn UserInformation + Sync + Send>), AuthError> {
self.api_auth.check_auth(headers, method).await
self.adapter.check_auth(headers, method).await
}
pub(crate) fn find_method(

20
proxmox-rest-server/src/lib.rs
View File

@ -21,6 +21,9 @@ use std::pin::Pin;
use anyhow::{bail, format_err, Error};
use nix::unistd::Pid;
use hyper::{Body, Response, Method};
use http::request::Parts;
use http::HeaderMap;
use proxmox::tools::fd::Fd;
use proxmox::sys::linux::procfs::PidStat;
@ -70,17 +73,26 @@ impl From<Error> for AuthError {
}
}
/// User Authentication trait
pub trait ApiAuth {
/// User Authentication and index/root page generation methods
pub trait ServerAdapter: Send + Sync {
/// Returns the index/root page
fn get_index(
&self,
rest_env: RestEnvironment,
parts: Parts,
) -> Pin<Box<dyn Future<Output = Response<Body>> + Send>>;
/// Extract user credentials from headers and check them.
///
/// If credenthials are valid, returns the username and a
/// [UserInformation] object to query additional user data.
fn check_auth<'a>(
&'a self,
headers: &'a http::HeaderMap,
method: &'a hyper::Method,
headers: &'a HeaderMap,
method: &'a Method,
) -> Pin<Box<dyn Future<Output = Result<(String, Box<dyn UserInformation + Sync + Send>), AuthError>> + Send + 'a>>;
}
lazy_static::lazy_static!{

31
proxmox-restore-daemon/src/main.rs
View File

@ -7,23 +7,17 @@ use std::os::unix::{
};
use std::path::Path;
use std::sync::{Arc, Mutex};
use std::future::Future;
use std::pin::Pin;
use anyhow::{bail, format_err, Error};
use lazy_static::lazy_static;
use log::{error, info};
use tokio::sync::mpsc;
use tokio_stream::wrappers::ReceiverStream;
use http::request::Parts;
use http::Response;
use hyper::{Body, StatusCode};
use hyper::header;
use proxmox::api::RpcEnvironmentType;
use pbs_client::DEFAULT_VSOCK_PORT;
use proxmox_rest_server::{ApiConfig, RestServer, RestEnvironment};
use proxmox_rest_server::{ApiConfig, RestServer};
mod proxmox_restore_daemon;
use proxmox_restore_daemon::*;
@ -93,29 +87,14 @@ fn setup_system_env() -> Result<(), Error> {
Ok(())
}
fn get_index<'a>(
_env: RestEnvironment,
_parts: Parts,
) -> Pin<Box<dyn Future<Output = http::Response<Body>> + Send + 'a>> {
Box::pin(async move {
let index = "<center><h1>Proxmox Backup Restore Daemon/h1></center>";
Response::builder()
.status(StatusCode::OK)
.header(header::CONTENT_TYPE, "text/html")
.body(index.into())
.unwrap()
})
}
async fn run() -> Result<(), Error> {
watchdog_init();
let auth_config = Arc::new(
auth::ticket_auth().map_err(|err| format_err!("reading ticket file failed: {}", err))?,
);
let config = ApiConfig::new("", &ROUTER, RpcEnvironmentType::PUBLIC, auth_config, &get_index)?;
let adaptor = StaticAuthAdapter::new()
.map_err(|err| format_err!("reading ticket file failed: {}", err))?;
let config = ApiConfig::new("", &ROUTER, RpcEnvironmentType::PUBLIC, adaptor)?;
let rest_server = RestServer::new(config);
let vsock_fd = get_vsock_fd()?;

51
proxmox-restore-daemon/src/proxmox_restore_daemon/auth.rs
View File

@ -5,10 +5,13 @@ use std::future::Future;
use std::pin::Pin;
use anyhow::{bail, format_err, Error};
use hyper::{Body, Response, Method, StatusCode};
use http::request::Parts;
use http::HeaderMap;
use proxmox::api::UserInformation;
use proxmox_rest_server::{ApiAuth, AuthError};
use proxmox_rest_server::{ServerAdapter, AuthError, RestEnvironment};
const TICKET_FILE: &str = "/ticket";
@ -22,15 +25,30 @@ impl UserInformation for SimpleUserInformation {
fn lookup_privs(&self, _userid: &str, _path: &[&str]) -> u64 { 0 }
}
pub struct StaticAuth {
pub struct StaticAuthAdapter {
ticket: String,
}
impl ApiAuth for StaticAuth {
impl StaticAuthAdapter {
pub fn new() -> Result<Self, Error> {
let mut ticket_file = File::open(TICKET_FILE)?;
let mut ticket = String::new();
let len = ticket_file.read_to_string(&mut ticket)?;
if len <= 0 {
bail!("invalid ticket: cannot be empty");
}
Ok(StaticAuthAdapter { ticket })
}
}
impl ServerAdapter for StaticAuthAdapter {
fn check_auth<'a>(
&'a self,
headers: &'a http::HeaderMap,
_method: &'a hyper::Method,
headers: &'a HeaderMap,
_method: &'a Method,
) -> Pin<Box<dyn Future<Output = Result<(String, Box<dyn UserInformation + Sync + Send>), AuthError>> + Send + 'a>> {
Box::pin(async move {
@ -47,14 +65,21 @@ impl ApiAuth for StaticAuth {
}
})
}
}
pub fn ticket_auth() -> Result<StaticAuth, Error> {
let mut ticket_file = File::open(TICKET_FILE)?;
let mut ticket = String::new();
let len = ticket_file.read_to_string(&mut ticket)?;
if len <= 0 {
bail!("invalid ticket: cannot be empty");
fn get_index(
&self,
_env: RestEnvironment,
_parts: Parts,
) -> Pin<Box<dyn Future<Output = http::Response<Body>> + Send>> {
Box::pin(async move {
let index = "<center><h1>Proxmox Backup Restore Daemon/h1></center>";
Response::builder()
.status(StatusCode::OK)
.header(hyper::header::CONTENT_TYPE, "text/html")
.body(index.into())
.unwrap()
})
}
Ok(StaticAuth { ticket })
}

1
proxmox-restore-daemon/src/proxmox_restore_daemon/mod.rs
View File

@ -3,6 +3,7 @@ mod api;
pub use api::*;
pub mod auth;
pub use auth::*;
mod watchdog;
pub use watchdog::*;

52
src/bin/proxmox-backup-api.rs
View File

@ -5,16 +5,17 @@ use anyhow::{bail, Error};
use futures::*;
use http::request::Parts;
use http::Response;
use hyper::{Body, StatusCode};
use hyper::header;
use hyper::{Body, Method, StatusCode};
use http::HeaderMap;
use proxmox::try_block;
use proxmox::api::RpcEnvironmentType;
use proxmox::tools::fs::CreateOptions;
use proxmox::api::UserInformation;
use proxmox_rest_server::{daemon, ApiConfig, RestServer, RestEnvironment};
use proxmox_rest_server::{daemon, AuthError, ApiConfig, RestServer, RestEnvironment, ServerAdapter};
use proxmox_backup::server::auth::default_api_auth;
use proxmox_backup::server::auth::check_pbs_auth;
use proxmox_backup::auth_helpers::*;
use proxmox_backup::config;
@ -27,20 +28,36 @@ fn main() {
}
}
fn get_index<'a>(
_env: RestEnvironment,
_parts: Parts,
) -> Pin<Box<dyn Future<Output = Response<Body>> + Send + 'a>> {
Box::pin(async move {
struct ProxmoxBackupApiAdapter;
let index = "<center><h1>Proxmox Backup API Server</h1></center>";
impl ServerAdapter for ProxmoxBackupApiAdapter {
Response::builder()
.status(StatusCode::OK)
.header(header::CONTENT_TYPE, "text/html")
.body(index.into())
.unwrap()
})
fn get_index(
&self,
_env: RestEnvironment,
_parts: Parts,
) -> Pin<Box<dyn Future<Output = Response<Body>> + Send>> {
Box::pin(async move {
let index = "<center><h1>Proxmox Backup API Server</h1></center>";
Response::builder()
.status(StatusCode::OK)
.header(hyper::header::CONTENT_TYPE, "text/html")
.body(index.into())
.unwrap()
})
}
fn check_auth<'a>(
&'a self,
headers: &'a HeaderMap,
method: &'a Method,
) -> Pin<Box<dyn Future<Output = Result<(String, Box<dyn UserInformation + Sync + Send>), AuthError>> + Send + 'a>> {
Box::pin(async move {
check_pbs_auth(headers, method).await
})
}
}
async fn run() -> Result<(), Error> {
@ -78,8 +95,7 @@ async fn run() -> Result<(), Error> {
pbs_buildcfg::JS_DIR,
&proxmox_backup::api2::ROUTER,
RpcEnvironmentType::PRIVILEGED,
default_api_auth(),
&get_index,
ProxmoxBackupApiAdapter,
)?;
let backup_user = pbs_config::backup_user()?;

41
src/bin/proxmox-backup-proxy.rs
View File

@ -15,21 +15,23 @@ use url::form_urlencoded;
use openssl::ssl::{SslMethod, SslAcceptor, SslFiletype};
use tokio_stream::wrappers::ReceiverStream;
use serde_json::{json, Value};
use http::{Method, HeaderMap};
use proxmox::try_block;
use proxmox::api::{RpcEnvironment, RpcEnvironmentType};
use proxmox::api::{RpcEnvironment, RpcEnvironmentType, UserInformation};
use proxmox::sys::linux::socket::set_tcp_keepalive;
use proxmox::tools::fs::CreateOptions;
use pbs_tools::task_log;
use pbs_datastore::DataStore;
use proxmox_rest_server::{
rotate_task_log_archive, extract_cookie , ApiConfig, RestServer, RestEnvironment, WorkerTask,
rotate_task_log_archive, extract_cookie , AuthError, ApiConfig, RestServer, RestEnvironment,
ServerAdapter, WorkerTask,
};
use proxmox_backup::{
server::{
auth::default_api_auth,
auth::check_pbs_auth,
jobstate::{
self,
Job,
@ -81,6 +83,29 @@ fn main() -> Result<(), Error> {
}
struct ProxmoxBackupProxyAdapter;
impl ServerAdapter for ProxmoxBackupProxyAdapter {
fn get_index(
&self,
env: RestEnvironment,
parts: Parts,
) -> Pin<Box<dyn Future<Output = Response<Body>> + Send>> {
Box::pin(get_index_future(env, parts))
}
fn check_auth<'a>(
&'a self,
headers: &'a HeaderMap,
method: &'a Method,
) -> Pin<Box<dyn Future<Output = Result<(String, Box<dyn UserInformation + Sync + Send>), AuthError>> + Send + 'a>> {
Box::pin(async move {
check_pbs_auth(headers, method).await
})
}
}
fn extract_lang_header(headers: &http::HeaderMap) -> Option<String> {
if let Some(Ok(cookie)) = headers.get("COOKIE").map(|v| v.to_str()) {
return extract_cookie(cookie, "PBSLangCookie");
@ -88,13 +113,6 @@ fn extract_lang_header(headers: &http::HeaderMap) -> Option<String> {
None
}
fn get_index<'a>(
env: RestEnvironment,
parts: Parts,
) -> Pin<Box<dyn Future<Output = Response<Body>> + Send + 'a>> {
Box::pin(get_index_future(env, parts))
}
async fn get_index_future(
env: RestEnvironment,
parts: Parts,
@ -191,8 +209,7 @@ async fn run() -> Result<(), Error> {
pbs_buildcfg::JS_DIR,
&proxmox_backup::api2::ROUTER,
RpcEnvironmentType::PUBLIC,
default_api_auth(),
&get_index,
ProxmoxBackupProxyAdapter,
)?;
config.add_alias("novnc", "/usr/share/novnc-pve");

174
src/server/auth.rs
View File

@ -1,9 +1,5 @@
//! Provides authentication primitives for the HTTP server
use std::sync::Arc;
use std::future::Future;
use std::pin::Pin;
use anyhow::format_err;
use proxmox::api::UserInformation;
@ -11,7 +7,7 @@ use proxmox::api::UserInformation;
use pbs_tools::ticket::{self, Ticket};
use pbs_config::{token_shadow, CachedUserInfo};
use pbs_api_types::{Authid, Userid};
use proxmox_rest_server::{ApiAuth, AuthError, extract_cookie};
use proxmox_rest_server::{AuthError, extract_cookie};
use crate::auth_helpers::*;
@ -28,111 +24,93 @@ enum AuthData {
ApiToken(String),
}
pub struct UserApiAuth {}
pub fn default_api_auth() -> Arc<UserApiAuth> {
Arc::new(UserApiAuth {})
}
impl UserApiAuth {
fn extract_auth_data(headers: &http::HeaderMap) -> Option<AuthData> {
if let Some(raw_cookie) = headers.get(header::COOKIE) {
if let Ok(cookie) = raw_cookie.to_str() {
if let Some(ticket) = extract_cookie(cookie, "PBSAuthCookie") {
let csrf_token = match headers.get("CSRFPreventionToken").map(|v| v.to_str()) {
Some(Ok(v)) => Some(v.to_owned()),
_ => None,
};
return Some(AuthData::User(UserAuthData { ticket, csrf_token }));
}
fn extract_auth_data(headers: &http::HeaderMap) -> Option<AuthData> {
if let Some(raw_cookie) = headers.get(header::COOKIE) {
if let Ok(cookie) = raw_cookie.to_str() {
if let Some(ticket) = extract_cookie(cookie, "PBSAuthCookie") {
let csrf_token = match headers.get("CSRFPreventionToken").map(|v| v.to_str()) {
Some(Ok(v)) => Some(v.to_owned()),
_ => None,
};
return Some(AuthData::User(UserAuthData { ticket, csrf_token }));
}
}
}
match headers.get(header::AUTHORIZATION).map(|v| v.to_str()) {
Some(Ok(v)) => {
if v.starts_with("PBSAPIToken ") || v.starts_with("PBSAPIToken=") {
Some(AuthData::ApiToken(v["PBSAPIToken ".len()..].to_owned()))
match headers.get(header::AUTHORIZATION).map(|v| v.to_str()) {
Some(Ok(v)) => {
if v.starts_with("PBSAPIToken ") || v.starts_with("PBSAPIToken=") {
Some(AuthData::ApiToken(v["PBSAPIToken ".len()..].to_owned()))
} else {
None
}
}
_ => None,
}
}
pub async fn check_pbs_auth(
headers: &http::HeaderMap,
method: &hyper::Method,
) -> Result<(String, Box<dyn UserInformation + Sync + Send>), AuthError> {
// fixme: make all IO async
let user_info = CachedUserInfo::new()?;
let auth_data = extract_auth_data(headers);
match auth_data {
Some(AuthData::User(user_auth_data)) => {
let ticket = user_auth_data.ticket.clone();
let ticket_lifetime = ticket::TICKET_LIFETIME;
let userid: Userid = Ticket::<super::ticket::ApiTicket>::parse(&ticket)?
.verify_with_time_frame(public_auth_key(), "PBS", None, -300..ticket_lifetime)?
.require_full()?;
let auth_id = Authid::from(userid.clone());
if !user_info.is_active_auth_id(&auth_id) {
return Err(format_err!("user account disabled or expired.").into());
}
if method != hyper::Method::GET {
if let Some(csrf_token) = &user_auth_data.csrf_token {
verify_csrf_prevention_token(
csrf_secret(),
&userid,
&csrf_token,
-300,
ticket_lifetime,
)?;
} else {
None
return Err(format_err!("missing CSRF prevention token").into());
}
}
_ => None,
Ok((auth_id.to_string(), Box::new(user_info)))
}
}
Some(AuthData::ApiToken(api_token)) => {
let mut parts = api_token.splitn(2, ':');
let tokenid = parts
.next()
.ok_or_else(|| format_err!("failed to split API token header"))?;
let tokenid: Authid = tokenid.parse()?;
async fn check_auth_async(
&self,
headers: &http::HeaderMap,
method: &hyper::Method,
) -> Result<(String, Box<dyn UserInformation + Sync + Send>), AuthError> {
// fixme: make all IO async
let user_info = CachedUserInfo::new()?;
let auth_data = Self::extract_auth_data(headers);
match auth_data {
Some(AuthData::User(user_auth_data)) => {
let ticket = user_auth_data.ticket.clone();
let ticket_lifetime = ticket::TICKET_LIFETIME;
let userid: Userid = Ticket::<super::ticket::ApiTicket>::parse(&ticket)?
.verify_with_time_frame(public_auth_key(), "PBS", None, -300..ticket_lifetime)?
.require_full()?;
let auth_id = Authid::from(userid.clone());
if !user_info.is_active_auth_id(&auth_id) {
return Err(format_err!("user account disabled or expired.").into());
}
if method != hyper::Method::GET {
if let Some(csrf_token) = &user_auth_data.csrf_token {
verify_csrf_prevention_token(
csrf_secret(),
&userid,
&csrf_token,
-300,
ticket_lifetime,
)?;
} else {
return Err(format_err!("missing CSRF prevention token").into());
}
}
Ok((auth_id.to_string(), Box::new(user_info)))
if !user_info.is_active_auth_id(&tokenid) {
return Err(format_err!("user account or token disabled or expired.").into());
}
Some(AuthData::ApiToken(api_token)) => {
let mut parts = api_token.splitn(2, ':');
let tokenid = parts
.next()
.ok_or_else(|| format_err!("failed to split API token header"))?;
let tokenid: Authid = tokenid.parse()?;
if !user_info.is_active_auth_id(&tokenid) {
return Err(format_err!("user account or token disabled or expired.").into());
}
let tokensecret = parts
.next()
.ok_or_else(|| format_err!("failed to split API token header"))?;
let tokensecret = percent_decode_str(tokensecret)
.decode_utf8()
.map_err(|_| format_err!("failed to decode API token header"))?;
let tokensecret = parts
.next()
.ok_or_else(|| format_err!("failed to split API token header"))?;
let tokensecret = percent_decode_str(tokensecret)
.decode_utf8()
.map_err(|_| format_err!("failed to decode API token header"))?;
token_shadow::verify_secret(&tokenid, &tokensecret)?;
token_shadow::verify_secret(&tokenid, &tokensecret)?;
Ok((tokenid.to_string(), Box::new(user_info)))
}
None => Err(AuthError::NoData),
Ok((tokenid.to_string(), Box::new(user_info)))
}
}
}
impl ApiAuth for UserApiAuth {
fn check_auth<'a>(
&'a self,
headers: &'a http::HeaderMap,
method: &'a hyper::Method,
) -> Pin<Box<dyn Future<Output = Result<(String, Box<dyn UserInformation + Sync + Send>), AuthError>> + Send + 'a>> {
Box::pin(self.check_auth_async(headers, method))
None => Err(AuthError::NoData),
}
}