proxmox-rest-server: make check_auth async

proxmox-rest-server/examples/minimal-rest-server.rs

@@ -1,5 +1,7 @@
 use std::sync::{Arc, Mutex};
 use std::collections::HashMap;
+use std::future::Future;
+use std::pin::Pin;
 
 use anyhow::{bail, format_err, Error};
 use lazy_static::lazy_static;
@@ -26,15 +28,17 @@ impl UserInformation for DummyUserInfo {
 struct DummyAuth;
 
 impl ApiAuth for DummyAuth {
-    fn check_auth(
+    fn check_auth<'a>(
-        &self,
+        &'a self,
-        _headers: &http::HeaderMap,
+        _headers: &'a http::HeaderMap,
-        _method: &hyper::Method,
+        _method: &'a hyper::Method,
-    ) -> Result<(String, Box<dyn UserInformation + Sync + Send>), AuthError> {
+    ) -> Pin<Box<dyn Future<Output = Result<(String, Box<dyn UserInformation + Sync + Send>), AuthError>> + Send + 'a>> {
+        Box::pin(async move {
             // get some global/cached userinfo
-        let userinfo = DummyUserInfo;
+            let userinfo: Box<dyn UserInformation + Sync + Send> = Box::new(DummyUserInfo);
             // Do some user checks, e.g. cookie/csrf
-        Ok(("User".to_string(), Box::new(userinfo)))
+            Ok(("User".to_string(), userinfo))
+        })
     }
 }
 

proxmox-rest-server/src/lib.rs

@@ -16,6 +16,8 @@
 //! * generic interface to authenticate user
 
 use std::sync::atomic::{Ordering, AtomicBool};
+use std::future::Future;
+use std::pin::Pin;
 
 use anyhow::{bail, format_err, Error};
 use nix::unistd::Pid;
@@ -74,11 +76,11 @@ pub trait ApiAuth {
     ///
     /// If credenthials are valid, returns the username and a
     /// [UserInformation] object to query additional user data.
-    fn check_auth(
+    fn check_auth<'a>(
-        &self,
+        &'a self,
-        headers: &http::HeaderMap,
+        headers: &'a http::HeaderMap,
-        method: &hyper::Method,
+        method: &'a hyper::Method,
-    ) -> Result<(String, Box<dyn UserInformation + Sync + Send>), AuthError>;
+    ) -> Pin<Box<dyn Future<Output = Result<(String, Box<dyn UserInformation + Sync + Send>), AuthError>> + Send + 'a>>;
 }
 
 lazy_static::lazy_static!{

proxmox-rest-server/src/rest.rs

@@ -654,7 +654,7 @@ async fn handle_request(
             let mut user_info: Box<dyn UserInformation + Send + Sync> = Box::new(EmptyUserInformation {});
 
             if auth_required {
-                match auth.check_auth(&parts.headers, &method) {
+                match auth.check_auth(&parts.headers, &method).await {
                     Ok((authid, info)) => {
                         rpcenv.set_auth_id(Some(authid));
                         user_info = info;
@@ -726,7 +726,7 @@ async fn handle_request(
 
         if comp_len == 0 {
             let language = extract_lang_header(&parts.headers);
-            match auth.check_auth(&parts.headers, &method) {
+            match auth.check_auth(&parts.headers, &method).await {
                 Ok((auth_id, _user_info)) => {
                     return Ok(api.get_index(Some(auth_id), language, parts));
                 }

proxmox-restore-daemon/src/proxmox_restore_daemon/auth.rs

@@ -1,6 +1,8 @@
 //! Authentication via a static ticket file
 use std::fs::File;
 use std::io::prelude::*;
+use std::future::Future;
+use std::pin::Pin;
 
 use anyhow::{bail, format_err, Error};
 
@@ -25,14 +27,17 @@ pub struct StaticAuth {
 }
 
 impl ApiAuth for StaticAuth {
-    fn check_auth(
+    fn check_auth<'a>(
-        &self,
+        &'a self,
-        headers: &http::HeaderMap,
+        headers: &'a http::HeaderMap,
-        _method: &hyper::Method,
+        _method: &'a hyper::Method,
-    ) -> Result<(String, Box<dyn UserInformation + Send + Sync>),  AuthError> {
+    ) -> Pin<Box<dyn Future<Output = Result<(String, Box<dyn UserInformation + Sync + Send>), AuthError>> + Send + 'a>> {
+        Box::pin(async move {
+
             match headers.get(hyper::header::AUTHORIZATION) {
                 Some(header) if header.to_str().unwrap_or("") == &self.ticket => {
-                Ok((String::from("root@pam"), Box::new(SimpleUserInformation {})))
+                    let user_info: Box<dyn UserInformation + Send + Sync> = Box::new(SimpleUserInformation {});
+                    Ok((String::from("root@pam"), user_info))
                 }
                 _ => {
                     return Err(AuthError::Generic(format_err!(
@@ -40,6 +45,7 @@ impl ApiAuth for StaticAuth {
                     )));
                 }
             }
+        })
     }
 }
 

src/server/auth.rs

@@ -1,7 +1,10 @@
 //! Provides authentication primitives for the HTTP server
-use anyhow::format_err;
 
 use std::sync::Arc;
+use std::future::Future;
+use std::pin::Pin;
+
+use anyhow::format_err;
 
 use proxmox::api::UserInformation;
 
@@ -55,16 +58,15 @@ impl UserApiAuth {
             _ => None,
         }
     }
-}
 
-impl ApiAuth for UserApiAuth {
+    async fn check_auth_async(
-
-    fn check_auth(
         &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);
@@ -124,3 +126,13 @@ impl ApiAuth for UserApiAuth {
         }
     }
 }
+
+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))
+    }
+}