Fix rust server auth (#18692)

* Added authentication via Bearer-token api_key and basic for server and client

* Improved errorhandling

* Added check on oAuth audience to example

* Updates of the petstore files for Rust-server

* Moved module import to prevent issue in callbacks

* updated samples

* Fix for unused-qualifications issue

* updated sampmles

modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/RustServerCodegen.java

@@ -230,11 +230,15 @@ public class RustServerCodegen extends AbstractRustCodegen implements CodegenCon
         supportingFiles.add(new SupportingFile("context.mustache", "src", "context.rs"));
         supportingFiles.add(new SupportingFile("models.mustache", "src", "models.rs"));
         supportingFiles.add(new SupportingFile("header.mustache", "src", "header.rs"));
+        supportingFiles.add(new SupportingFile("auth.mustache", "src", "auth.rs"));
         supportingFiles.add(new SupportingFile("server-mod.mustache", "src/server", "mod.rs"));
+        supportingFiles.add(new SupportingFile("server-server_auth.mustache", "src/server", "server_auth.rs"));
         supportingFiles.add(new SupportingFile("client-mod.mustache", "src/client", "mod.rs"));
         supportingFiles.add(new SupportingFile("example-server-main.mustache", "examples/server", "main.rs"));
         supportingFiles.add(new SupportingFile("example-server-server.mustache", "examples/server", "server.rs"));
+        supportingFiles.add(new SupportingFile("example-server-auth.mustache", "examples/server", "server_auth.rs"));
         supportingFiles.add(new SupportingFile("example-client-main.mustache", "examples/client", "main.rs"));
+        supportingFiles.add(new SupportingFile("example-client-auth.mustache", "examples/client", "client_auth.rs"));
         supportingFiles.add(new SupportingFile("example-ca.pem", "examples", "ca.pem"));
         supportingFiles.add(new SupportingFile("example-server-chain.pem", "examples", "server-chain.pem"));
         supportingFiles.add(new SupportingFile("example-server-key.pem", "examples", "server-key.pem"));

modules/openapi-generator/src/main/resources/rust-server/Cargo.mustache

@@ -17,7 +17,7 @@ license = "{{.}}"
 # Override this license by providing a License Object in the OpenAPI.
 license = "Unlicense"
 {{/licenseInfo}}
-edition = "2021"
+edition = "2018"
 {{#publishRustRegistry}}
 publish = ["{{.}}"]
 {{/publishRustRegistry}}
@@ -133,6 +133,9 @@ frunk_core = { version = "0.3.0", optional = true }
 frunk-enum-derive = { version = "0.2.0", optional = true }
 frunk-enum-core = { version = "0.2.0", optional = true }
 
+# Bearer authentication
+jsonwebtoken = { version = "9.3.0", optional = false }
+
 [dev-dependencies]
 clap = "2.25"
 env_logger = "0.7"

modules/openapi-generator/src/main/resources/rust-server/auth.mustache

@@ -0,0 +1,62 @@
+use std::collections::BTreeSet;
+use crate::server::Authorization;
+use serde::{Deserialize, Serialize};
+use swagger::{ApiError, auth::{Basic, Bearer}};
+
+#[derive(Debug, Serialize, Deserialize)]
+pub struct Claims {
+    pub sub: String,
+    pub iss: String,
+    pub aud: String,
+    pub company: String,
+    pub exp: u64,
+    pub scopes: String,
+}
+
+
+pub trait AuthenticationApi {
+
+    /// Method should be implemented (see example-code) to map Bearer-token to an Authorization
+    fn bearer_authorization(&self, token: &Bearer) -> Result<Authorization, ApiError>;
+
+    /// Method should be implemented (see example-code) to map ApiKey to an Authorization
+    fn apikey_authorization(&self, token: &str) -> Result<Authorization, ApiError>;
+
+    /// Method should be implemented (see example-code) to map Basic (Username:password) to an Authorization
+    fn basic_authorization(&self, basic: &Basic) -> Result<Authorization, ApiError>;
+} 
+
+// Implement it for AllowAllAuthenticator (dummy is needed, but should not used as we have Bearer authorization)
+use swagger::auth::{AllowAllAuthenticator, RcBound, Scopes};
+
+fn dummy_authorization() -> Authorization {
+    // Is called when MakeAllowAllAuthenticator is added to the stack. This is not needed as we have Bearer-authorization in the example-code.
+    // However, if you want to use it anyway this can not be unimplemented, so dummy implementation added.
+    // unimplemented!()
+    Authorization{
+        subject: "Dummmy".to_owned(),
+        scopes: Scopes::Some(BTreeSet::new()), // create an empty scope, as this should not be used
+        issuer: None
+    }
+}
+
+impl<T, RC> AuthenticationApi for AllowAllAuthenticator<T, RC>
+where
+    RC: RcBound,
+    RC::Result: Send + 'static {
+
+    /// Get method to map Bearer-token to an Authorization
+    fn bearer_authorization(&self, _token: &Bearer) -> Result<Authorization, ApiError> {
+        Ok(dummy_authorization())
+    }
+
+    /// Get method to map api-key to an Authorization
+    fn apikey_authorization(&self, _apikey: &str) -> Result<Authorization, ApiError> {
+        Ok(dummy_authorization())
+    }
+
+    /// Get method to map basic token to an Authorization
+    fn basic_authorization(&self, _basic: &Basic) -> Result<Authorization, ApiError> {
+        Ok(dummy_authorization())
+    }
+}

modules/openapi-generator/src/main/resources/rust-server/context.mustache

@@ -8,7 +8,8 @@ use std::marker::PhantomData;
 use std::task::{Poll, Context};
 use swagger::auth::{AuthData, Authorization, Bearer, Scopes};
 use swagger::{EmptyContext, Has, Pop, Push, XSpanIdString};
-use crate::Api;
+use crate::{Api, AuthenticationApi};
+use log::error;
 
 pub struct MakeAddContext<T, A> {
     inner: T,
@@ -89,7 +90,7 @@ impl<T, A, B, C, D, ReqBody> Service<Request<ReqBody>> for AddContext<T, A, B, C
         B: Push<Option<AuthData>, Result=C>,
         C: Push<Option<Authorization>, Result=D>,
         D: Send + 'static,
-        T: Service<(Request<ReqBody>, D)>
+        T: Service<(Request<ReqBody>, D)> + AuthenticationApi
 {
     type Error = T::Error;
     type Future = T::Future;
@@ -111,9 +112,17 @@ impl<T, A, B, C, D, ReqBody> Service<Request<ReqBody>> for AddContext<T, A, B, C
             use swagger::auth::Basic;
             use std::ops::Deref;
             if let Some(basic) = swagger::auth::from_headers::<Basic>(headers) {
+                let authorization = self.inner.basic_authorization(&basic);
                 let auth_data = AuthData::Basic(basic);
+
                 let context = context.push(Some(auth_data));
-                let context = context.push(None::<Authorization>);
+                let context = match authorization {
+                    Ok(auth) => context.push(Some(auth)),
+                    Err(err) => {
+                        error!("Error during Authorization: {err:?}");
+                        context.push(None::<Authorization>)
+                    }
+                };
 
                 return self.inner.call((request, context))
             }
@@ -124,9 +133,17 @@ impl<T, A, B, C, D, ReqBody> Service<Request<ReqBody>> for AddContext<T, A, B, C
             use swagger::auth::Bearer;
             use std::ops::Deref;
             if let Some(bearer) = swagger::auth::from_headers::<Bearer>(headers) {
+                let authorization = self.inner.bearer_authorization(&bearer);
                 let auth_data = AuthData::Bearer(bearer);
+
                 let context = context.push(Some(auth_data));
-                let context = context.push(None::<Authorization>);
+                let context = match authorization {
+                    Ok(auth) => context.push(Some(auth)),
+                    Err(err) => {
+                        error!("Error during Authorization: {err:?}");
+                        context.push(None::<Authorization>)
+                    }
+                };
 
                 return self.inner.call((request, context))
             }
@@ -138,9 +155,17 @@ impl<T, A, B, C, D, ReqBody> Service<Request<ReqBody>> for AddContext<T, A, B, C
             use swagger::auth::Bearer;
             use std::ops::Deref;
             if let Some(bearer) = swagger::auth::from_headers::<Bearer>(headers) {
+                let authorization = self.inner.bearer_authorization(&bearer);
                 let auth_data = AuthData::Bearer(bearer);
+
                 let context = context.push(Some(auth_data));
-                let context = context.push(None::<Authorization>);
+                let context = match authorization {
+                    Ok(auth) => context.push(Some(auth)),
+                    Err(err) => {
+                        error!("Error during Authorization: {err:?}");
+                        context.push(None::<Authorization>)
+                    }
+                };
 
                 return self.inner.call((request, context))
             }
@@ -152,9 +177,17 @@ impl<T, A, B, C, D, ReqBody> Service<Request<ReqBody>> for AddContext<T, A, B, C
             use swagger::auth::api_key_from_header;
 
             if let Some(header) = api_key_from_header(headers, "{{{keyParamName}}}") {
+                let authorization = self.inner.apikey_authorization(&header);
                 let auth_data = AuthData::ApiKey(header);
+
                 let context = context.push(Some(auth_data));
-                let context = context.push(None::<Authorization>);
+                let context = match authorization {
+                    Ok(auth) => context.push(Some(auth)),
+                    Err(err) => {
+                        error!("Error during Authorization: {err:?}");
+                        context.push(None::<Authorization>)
+                    }
+                };
 
                 return self.inner.call((request, context))
             }
@@ -167,9 +200,17 @@ impl<T, A, B, C, D, ReqBody> Service<Request<ReqBody>> for AddContext<T, A, B, C
                 .map(|e| e.1.clone().into_owned())
                 .next();
             if let Some(key) = key {
+                let authorization = self.inner.apikey_authorization(&key);
                 let auth_data = AuthData::ApiKey(key);
+
                 let context = context.push(Some(auth_data));
-                let context = context.push(None::<Authorization>);
+                let context = match authorization {
+                    Ok(auth) => context.push(Some(auth)),
+                    Err(err) => {
+                        error!("Error during Authorization: {err:?}");
+                        context.push(None::<Authorization>)
+                    }
+                };
 
                 return self.inner.call((request, context))
             }

modules/openapi-generator/src/main/resources/rust-server/example-client-auth.mustache

@@ -0,0 +1,17 @@
+use {{{externCrateName}}}::Claims;
+use jsonwebtoken::{encode, errors::Error as JwtError, Algorithm, EncodingKey, Header};
+use log::debug;
+
+/// build an encrypted token with the provided claims.
+pub fn build_token(my_claims: Claims, key: &[u8]) -> Result<String, JwtError> {
+
+    // Ensure that you set the correct algorithm and correct key.
+    // See https://github.com/Keats/jsonwebtoken for more information.
+    let header =
+        Header { kid: Some("signing_key".to_owned()), alg: Algorithm::HS512, ..Default::default() };
+
+    let token = encode(&header, &my_claims, &EncodingKey::from_secret(key))?;
+    debug!("Derived token: {:?}", token);
+
+    Ok(token)
+}

modules/openapi-generator/src/main/resources/rust-server/example-client-main.mustache

@@ -7,7 +7,7 @@ mod server;
 #[allow(unused_imports)]
 use futures::{future, Stream, stream};
 #[allow(unused_imports)]
-use {{{externCrateName}}}::{Api, ApiNoContext, Client, ContextWrapperExt, models,
+use {{{externCrateName}}}::{Api, ApiNoContext, Claims, Client, ContextWrapperExt, models,
 {{#apiInfo}}
   {{#apis}}
     {{#operations}}
@@ -20,6 +20,9 @@ use {{{externCrateName}}}::{Api, ApiNoContext, Client, ContextWrapperExt, models
                      };
 use clap::{App, Arg};
 
+// NOTE: Set environment variable RUST_LOG to the name of the executable (or "cargo run") to activate console logging for all loglevels.
+//     See https://docs.rs/env_logger/latest/env_logger/  for more details
+
 #[allow(unused_imports)]
 use log::info;
 
@@ -29,6 +32,10 @@ use swagger::{AuthData, ContextBuilder, EmptyContext, Has, Push, XSpanIdString};
 
 type ClientContext = swagger::make_context_ty!(ContextBuilder, EmptyContext, Option<AuthData>, XSpanIdString);
 
+mod client_auth;
+use client_auth::build_token;
+
+
 // rt may be unused if there are no examples
 #[allow(unused_mut)]
 fn main() {
@@ -69,6 +76,37 @@ fn main() {
             .help("Port to contact"))
         .get_matches();
 
+    // Create Bearer-token with a fixed key (secret) for test purposes.
+    // In a real (production) system this Bearer token should be obtained via an external Identity/Authentication-server
+    // Ensure that you set the correct algorithm and encodingkey that matches what is used on the server side.
+    // See https://github.com/Keats/jsonwebtoken for more information
+
+    let auth_token = build_token(
+            Claims {
+                sub: "tester@acme.com".to_owned(), 
+                company: "ACME".to_owned(),
+                iss: "my_identity_provider".to_owned(),
+                // added a very long expiry time
+                aud: "org.acme.Resource_Server".to_string(),
+                exp: 10000000000,
+                // In this example code all available Scopes are added, so the current Bearer Token gets fully authorization.
+                scopes: [
+                  {{#authMethods}}
+                   {{#scopes}}
+                            "{{{scope}}}",
+                   {{/scopes}}
+                  {{/authMethods}}
+                ].join(", ")
+            }, 
+            b"secret").unwrap();
+
+    let auth_data = if !auth_token.is_empty() {
+        Some(AuthData::Bearer(swagger::auth::Bearer { token: auth_token}))
+    } else {
+        // No Bearer-token available, so return None
+        None
+    };
+
     let is_https = matches.is_present("https");
     let base_url = format!("{}://{}:{}",
         if is_https { "https" } else { "http" },
@@ -76,7 +114,7 @@ fn main() {
         matches.value_of("port").unwrap());
 
     let context: ClientContext =
-        swagger::make_context!(ContextBuilder, EmptyContext, None as Option<AuthData>, XSpanIdString::default());
+        swagger::make_context!(ContextBuilder, EmptyContext, auth_data, XSpanIdString::default());
 
     let mut client : Box<dyn ApiNoContext<ClientContext>> = if matches.is_present("https") {
         // Using Simple HTTPS

modules/openapi-generator/src/main/resources/rust-server/example-server-auth.mustache

@@ -0,0 +1,132 @@
+use swagger::{
+    ApiError,
+    auth::{Basic, Bearer},
+    Has, 
+    XSpanIdString};
+use {{{externCrateName}}}::{AuthenticationApi, Claims};
+use crate::server::Server;
+use jsonwebtoken::{decode, errors as JwtError, decode_header, DecodingKey, TokenData, Validation};
+use swagger::auth::Authorization;
+use log::{error, debug};
+
+// NOTE: Set environment variable RUST_LOG to the name of the executable (or "cargo run") to activate console logging for all loglevels.
+//     See https://docs.rs/env_logger/latest/env_logger/  for more details
+
+
+/// Get a dummy claim with full permissions (all scopes) for testing purposes
+fn full_permission_claim() -> Claims {
+        Claims {
+            sub: "tester@acme.com".to_owned(), 
+            company: "ACME".to_owned(),
+            iss: "mini-bank-IDP".to_owned(),
+            aud: "org.acme.Resource_Server".to_string(),
+            // added a very long expiry time
+            exp: 10000000000,
+            // In this example code all available Scopes are added, so the current Bearer Token gets fully authorization.
+            scopes: [
+                {{#authMethods}}
+                {{#scopes}}
+                        "{{{scope}}}",
+                {{/scopes}}
+                {{/authMethods}}
+            ].join(", ")
+        }
+}
+
+
+
+/// Extract the data from a Bearer token using the provided Key (secret) and using the HS512-algorithm in this example. 
+fn extract_token_data(token: &str, key: &[u8]) -> Result<TokenData<Claims>, JwtError::Error> {
+    
+    // Ensure that you set the correct algorithm and correct key.
+    // See https://github.com/Keats/jsonwebtoken for more information.
+    let header = decode_header(token)?;
+    let validation = {
+        let mut validation = Validation::new(header.alg);
+        validation.set_audience(&["org.acme.Resource_Server"]);
+        validation.validate_exp = true;
+        validation
+    };
+
+    let token_data = decode::<Claims>(
+        &token,
+        &DecodingKey::from_secret(key),
+        &validation,
+    )?;
+
+    Ok(token_data)
+}
+
+/// Build a swagger-Authorization based on the claims (Assuming claims have been extracted from a validated token)
+fn build_authorization(claims: Claims) -> Authorization {
+    let mut scopes = std::collections::BTreeSet::<String>::new();
+    claims
+        .scopes
+        .split(",")
+        .map(|s| s.trim())
+        .for_each(|s| {let _ = scopes.insert(s.to_string()); });
+    let scopes = swagger::auth::Scopes::Some(scopes);
+
+    Authorization{
+        subject: claims.sub, 
+        scopes, 
+        issuer: Some(claims.iss)}
+}
+
+fn get_jwt_error_string(error: JwtError::Error) -> String {
+    match error.kind() {
+        JwtError::ErrorKind::InvalidSignature => "Incorrect token signature".to_owned(),
+        JwtError::ErrorKind::InvalidAlgorithm => "The Algorithm is not correct".to_owned(),
+        JwtError::ErrorKind::ExpiredSignature => "The token has expired".to_owned(),
+        JwtError::ErrorKind::Base64(e) => format!("Base64 decode failed: {e}"),
+        JwtError::ErrorKind::Json(e) => format!("JSON decoding: {e}"),
+        JwtError::ErrorKind::Utf8(e) => format!("Invalid UTF-8: {e}"),
+        _ => error.to_string()
+    }
+}
+
+
+impl<C> AuthenticationApi for Server<C> where C: Has<XSpanIdString> + Send + Sync {
+
+    /// Implementation of the method to map a Bearer-token to an Authorization
+    fn bearer_authorization(&self, bearer: &Bearer) -> Result<Authorization, ApiError> {
+        debug!("\tAuthorizationApi: Received Bearer-token, {bearer:#?}");
+
+        match extract_token_data(&bearer.token, b"secret") {
+            Ok(auth_data) => {
+                debug!("\tUnpack auth_data as: {auth_data:#?}");
+                let authorization = build_authorization(auth_data.claims);
+                Ok(authorization)
+            },
+            Err(err) => {
+                let msg = get_jwt_error_string(err);
+                error!("Failed to unpack Bearer-token: {msg}");
+                Err(ApiError(msg))
+            }
+        }
+    }
+
+    /// Implementation of the method to map an api-key to an Authorization
+    fn apikey_authorization(&self, api_key: &str) -> Result<Authorization, ApiError> {
+        debug!("\tAuthorizationApi: Received api-key, {api_key:#?}");
+
+        // TODO: insert the logic to map received apikey to the set of claims 
+        let claims = full_permission_claim();
+
+        // and build an authorization out of it
+        Ok(build_authorization(claims))
+    }
+    
+    /// Implementation of the method to map a basic authentication (username and password) to an Authorization
+    fn basic_authorization(&self, basic: &Basic) -> Result<Authorization, ApiError> {
+        debug!("\tAuthorizationApi: Received Basic-token, {basic:#?}");
+
+        // TODO: insert the logic to map received apikey to the set of claims 
+        let claims = full_permission_claim();
+
+        // and build an authorization out of it
+        Ok(build_authorization(claims))
+    }
+
+} 
+

modules/openapi-generator/src/main/resources/rust-server/example-server-common.mustache

@@ -30,7 +30,9 @@ pub async fn create(addr: &str, https: bool) {
 
     let service = MakeService::new(server);
 
-    let service = MakeAllowAllAuthenticator::new(service, "cosmo");
+    // This pushes a fourth layer of the middleware-stack even though Swagger assumes only three levels.
+    // This fourth layer creates an accept-all policy, hower the example-code already acchieves the same via a Bearer-token with full permissions, so next line is not needed (anymore).  
+    // let service = MakeAllowAllAuthenticator::new(service, "cosmo");
 
     #[allow(unused_mut)]
     let mut service =
@@ -56,6 +58,7 @@ pub async fn create(addr: &str, https: bool) {
             let tls_acceptor = ssl.build();
             let tcp_listener = TcpListener::bind(&addr).await.unwrap();
 
+            info!("Starting a server (with https)");
             loop {
                 if let Ok((tcp, _)) = tcp_listener.accept().await {
                     let ssl = Ssl::new(tls_acceptor.context()).unwrap();
@@ -75,6 +78,7 @@ pub async fn create(addr: &str, https: bool) {
             }
         }
     } else {
+        info!("Starting a server (over http, so no TLS)");
         // Using HTTP
         hyper::server::Server::bind(&addr).serve(service).await.unwrap()
     }

modules/openapi-generator/src/main/resources/rust-server/example-server-main.mustache

@@ -1,10 +1,13 @@
 //! Main binary entry point for {{{externCrateName}}} implementation.
+// This is the amended version that adds Authorization via Inversion of Control.
 
 #![allow(missing_docs)]
 
+
 use clap::{App, Arg};
 
 mod server;
+mod server_auth;
 
 
 /// Create custom server, wire it to the autogenerated router,

modules/openapi-generator/src/main/resources/rust-server/example-server-operation.mustache

@@ -14,5 +14,5 @@
         context: &C) -> Result<{{{operationId}}}Response, ApiError>
     {
         info!("{{#vendorExtensions}}{{{x-operation-id}}}{{/vendorExtensions}}({{#allParams}}{{#vendorExtensions}}{{{x-format-string}}}{{/vendorExtensions}}{{^-last}}, {{/-last}}{{/allParams}}) - X-Span-ID: {:?}"{{#allParams}}, {{{paramName}}}{{/allParams}}, context.get().0.clone());
-        Err(ApiError("Generic failure".into()))
+        Err(ApiError("Api-Error: Operation is NOT implemented".into()))
     }

modules/openapi-generator/src/main/resources/rust-server/example-server-server.mustache

@@ -1,5 +1,11 @@
 {{>example-server-common}}
 
+use jsonwebtoken::{decode, encode, errors::Error as JwtError, Algorithm, DecodingKey, EncodingKey, Header, TokenData, Validation};
+use serde::{Deserialize, Serialize};
+use swagger::auth::Authorization;
+use crate::server_auth;
+
+
 use {{{externCrateName}}}::{
     Api,
 {{#apiInfo}}

modules/openapi-generator/src/main/resources/rust-server/lib.mustache

@@ -1,13 +1,16 @@
 #![allow(missing_docs, trivial_casts, unused_variables, unused_mut, unused_imports, unused_extern_crates, non_camel_case_types)]
 #![allow(unused_imports, unused_attributes)]
-#![allow(clippy::derive_partial_eq_without_eq, clippy::disallowed_names, clippy::too_many_arguments)]
+#![allow(clippy::derive_partial_eq_without_eq, clippy::disallowed_names)]
 
 use async_trait::async_trait;
 use futures::Stream;
 use std::error::Error;
+use std::collections::BTreeSet;
 use std::task::{Poll, Context};
 use swagger::{ApiError, ContextWrapper};
 use serde::{Serialize, Deserialize};
+use crate::server::Authorization;
+
 
 type ServiceError = Box<dyn Error + Send + Sync + 'static>;
 
@@ -16,6 +19,10 @@ pub const BASE_PATH: &str = "{{{basePathWithoutHost}}}";
 pub const API_VERSION: &str = "{{{.}}}";
 {{/appVersion}}
 
+mod auth;
+pub use auth::{AuthenticationApi, Claims};
+
+
 {{#apiInfo}}
   {{#apis}}
     {{#operations}}

modules/openapi-generator/src/main/resources/rust-server/server-imports.mustache

@@ -23,8 +23,7 @@ use multipart::server::save::SaveResult;
 {{/apiUsesMultipartFormData}}
 
 #[allow(unused_imports)]
-use crate::models;
-use crate::header;
+use crate::{models, header, AuthenticationApi};
 
 pub use crate::context;
 

modules/openapi-generator/src/main/resources/rust-server/server-make-service.mustache

@@ -1,3 +1,4 @@
+
 pub struct MakeService<T, C> where
     T: Api<C> + Clone + Send + 'static,
     C: Has<XSpanIdString> {{#hasAuthMethods}}+ Has<Option<Authorization>>{{/hasAuthMethods}} + Send + Sync + 'static
@@ -18,6 +19,7 @@ impl<T, C> MakeService<T, C> where
     }
 }
 
+
 impl<T, C, Target> hyper::service::Service<Target> for MakeService<T, C> where
     T: Api<C> + Clone + Send + 'static,
     C: Has<XSpanIdString> {{#hasAuthMethods}}+ Has<Option<Authorization>>{{/hasAuthMethods}} + Send + Sync + 'static

modules/openapi-generator/src/main/resources/rust-server/server-mod.mustache

@@ -3,6 +3,8 @@ use crate::{Api{{#apiInfo}}{{#apis}}{{#operations}}{{#operation}},
      {{{operationId}}}Response{{/operation}}{{/operations}}{{/apis}}{{/apiInfo}}
 };
 
+mod server_auth;
+
 {{#hasCallbacks}}
 pub mod callbacks;
 

modules/openapi-generator/src/main/resources/rust-server/server-operation.mustache

@@ -224,11 +224,10 @@
                                     let deserializer = &mut serde_json::Deserializer::from_slice(&body);
 {{/x-consumes-json}}
 {{^x-consumes-plain-text}}
-                                    let handle_unknown_field = |path: serde_ignored::Path<'_>| {
+                                    match serde_ignored::deserialize(deserializer, |path| {
                                             warn!("Ignoring unknown field in body: {}", path);
                                             unused_elements.push(path.to_string());
-                                    };
-                                    match serde_ignored::deserialize(deserializer, handle_unknown_field) {
+                                    }) {
                                         Ok(param_{{{paramName}}}) => param_{{{paramName}}},
 {{#required}}
                                         Err(e) => return Ok(Response::builder()
@@ -422,11 +421,10 @@
                                             Some("{{{contentType}}}") if param_{{{paramName}}}.is_none() => {
                                                 // Extract JSON part.
                                                 let deserializer = &mut serde_json::Deserializer::from_slice(part.body.as_slice());
-                                                let handle_unknown_field = |path: serde_ignored::Path<'_>| {
+                                                let json_data: {{dataType}} = match serde_ignored::deserialize(deserializer, |path| {
                                                     warn!("Ignoring unknown field in JSON part: {}", path);
                                                     unused_elements.push(path.to_string());
-                                                };
-                                                let json_data: {{dataType}} = match serde_ignored::deserialize(deserializer, handle_unknown_field) {
+                                                }) {
                                                     Ok(json_data) => json_data,
                                                     Err(e) => return Ok(Response::builder()
                                                                     .status(StatusCode::BAD_REQUEST)

modules/openapi-generator/src/main/resources/rust-server/server-server_auth.mustache

@@ -0,0 +1,28 @@
+use super::Service;
+use crate::{Api, AuthenticationApi};
+use swagger::{
+    ApiError,
+    Authorization, 
+    auth::{Basic, Bearer}, 
+    Has, 
+    XSpanIdString};
+
+impl<T,C> AuthenticationApi for Service<T, C> where
+T: Api<C> + Clone + Send + 'static + AuthenticationApi,
+C: Has<XSpanIdString> + Has<Option<Authorization>> + Send + Sync + 'static {
+
+    /// Passthrough of the task to the api-implementation
+    fn bearer_authorization(&self, token: &Bearer) -> Result<Authorization, ApiError> {
+        self.api_impl.bearer_authorization(token)
+    }
+
+    /// Passthrough of the task to the api-implementation
+    fn apikey_authorization(&self, token: &str) -> Result<Authorization, ApiError> {
+        self.api_impl.apikey_authorization(token)
+    }
+
+    /// Passthrough of the task to the api-implementation
+    fn basic_authorization(&self, basic: &Basic) -> Result<Authorization, ApiError> {
+        self.api_impl.basic_authorization(basic)
+    }
+}

samples/server/petstore/rust-server/output/multipart-v3/.openapi-generator/FILES

@@ -8,14 +8,18 @@ docs/MultipartRequestObjectField.md
 docs/MultipleIdenticalMimeTypesPostRequest.md
 docs/default_api.md
 examples/ca.pem
+examples/client/client_auth.rs
 examples/client/main.rs
 examples/server-chain.pem
 examples/server-key.pem
 examples/server/main.rs
 examples/server/server.rs
+examples/server/server_auth.rs
+src/auth.rs
 src/client/mod.rs
 src/context.rs
 src/header.rs
 src/lib.rs
 src/models.rs
 src/server/mod.rs
+src/server/server_auth.rs

samples/server/petstore/rust-server/output/multipart-v3/Cargo.toml

@@ -5,7 +5,7 @@ authors = ["OpenAPI Generator team and contributors"]
 description = "API under test"
 # Override this license by providing a License Object in the OpenAPI.
 license = "Unlicense"
-edition = "2021"
+edition = "2018"
 
 [features]
 default = ["client", "server"]
@@ -69,6 +69,9 @@ frunk_core = { version = "0.3.0", optional = true }
 frunk-enum-derive = { version = "0.2.0", optional = true }
 frunk-enum-core = { version = "0.2.0", optional = true }
 
+# Bearer authentication
+jsonwebtoken = { version = "9.3.0", optional = false }
+
 [dev-dependencies]
 clap = "2.25"
 env_logger = "0.7"

samples/server/petstore/rust-server/output/multipart-v3/examples/client/client_auth.rs

@@ -0,0 +1,17 @@
+use multipart_v3::Claims;
+use jsonwebtoken::{encode, errors::Error as JwtError, Algorithm, EncodingKey, Header};
+use log::debug;
+
+/// build an encrypted token with the provided claims.
+pub fn build_token(my_claims: Claims, key: &[u8]) -> Result<String, JwtError> {
+
+    // Ensure that you set the correct algorithm and correct key.
+    // See https://github.com/Keats/jsonwebtoken for more information.
+    let header =
+        Header { kid: Some("signing_key".to_owned()), alg: Algorithm::HS512, ..Default::default() };
+
+    let token = encode(&header, &my_claims, &EncodingKey::from_secret(key))?;
+    debug!("Derived token: {:?}", token);
+
+    Ok(token)
+}

samples/server/petstore/rust-server/output/multipart-v3/examples/client/main.rs

@@ -4,13 +4,16 @@
 #[allow(unused_imports)]
 use futures::{future, Stream, stream};
 #[allow(unused_imports)]
-use multipart_v3::{Api, ApiNoContext, Client, ContextWrapperExt, models,
+use multipart_v3::{Api, ApiNoContext, Claims, Client, ContextWrapperExt, models,
                       MultipartRelatedRequestPostResponse,
                       MultipartRequestPostResponse,
                       MultipleIdenticalMimeTypesPostResponse,
                      };
 use clap::{App, Arg};
 
+// NOTE: Set environment variable RUST_LOG to the name of the executable (or "cargo run") to activate console logging for all loglevels.
+//     See https://docs.rs/env_logger/latest/env_logger/  for more details
+
 #[allow(unused_imports)]
 use log::info;
 
@@ -20,6 +23,10 @@ use swagger::{AuthData, ContextBuilder, EmptyContext, Has, Push, XSpanIdString};
 
 type ClientContext = swagger::make_context_ty!(ContextBuilder, EmptyContext, Option<AuthData>, XSpanIdString);
 
+mod client_auth;
+use client_auth::build_token;
+
+
 // rt may be unused if there are no examples
 #[allow(unused_mut)]
 fn main() {
@@ -50,6 +57,32 @@ fn main() {
             .help("Port to contact"))
         .get_matches();
 
+    // Create Bearer-token with a fixed key (secret) for test purposes.
+    // In a real (production) system this Bearer token should be obtained via an external Identity/Authentication-server
+    // Ensure that you set the correct algorithm and encodingkey that matches what is used on the server side.
+    // See https://github.com/Keats/jsonwebtoken for more information
+
+    let auth_token = build_token(
+            Claims {
+                sub: "tester@acme.com".to_owned(), 
+                company: "ACME".to_owned(),
+                iss: "my_identity_provider".to_owned(),
+                // added a very long expiry time
+                aud: "org.acme.Resource_Server".to_string(),
+                exp: 10000000000,
+                // In this example code all available Scopes are added, so the current Bearer Token gets fully authorization.
+                scopes: [
+                ].join(", ")
+            }, 
+            b"secret").unwrap();
+
+    let auth_data = if !auth_token.is_empty() {
+        Some(AuthData::Bearer(swagger::auth::Bearer { token: auth_token}))
+    } else {
+        // No Bearer-token available, so return None
+        None
+    };
+
     let is_https = matches.is_present("https");
     let base_url = format!("{}://{}:{}",
         if is_https { "https" } else { "http" },
@@ -57,7 +90,7 @@ fn main() {
         matches.value_of("port").unwrap());
 
     let context: ClientContext =
-        swagger::make_context!(ContextBuilder, EmptyContext, None as Option<AuthData>, XSpanIdString::default());
+        swagger::make_context!(ContextBuilder, EmptyContext, auth_data, XSpanIdString::default());
 
     let mut client : Box<dyn ApiNoContext<ClientContext>> = if matches.is_present("https") {
         // Using Simple HTTPS

samples/server/petstore/rust-server/output/multipart-v3/examples/server/main.rs

@@ -1,10 +1,13 @@
 //! Main binary entry point for multipart_v3 implementation.
+// This is the amended version that adds Authorization via Inversion of Control.
 
 #![allow(missing_docs)]
 
+
 use clap::{App, Arg};
 
 mod server;
+mod server_auth;
 
 
 /// Create custom server, wire it to the autogenerated router,

samples/server/petstore/rust-server/output/multipart-v3/examples/server/server.rs

@@ -30,7 +30,9 @@ pub async fn create(addr: &str, https: bool) {
 
     let service = MakeService::new(server);
 
-    let service = MakeAllowAllAuthenticator::new(service, "cosmo");
+    // This pushes a fourth layer of the middleware-stack even though Swagger assumes only three levels.
+    // This fourth layer creates an accept-all policy, hower the example-code already acchieves the same via a Bearer-token with full permissions, so next line is not needed (anymore).  
+    // let service = MakeAllowAllAuthenticator::new(service, "cosmo");
 
     #[allow(unused_mut)]
     let mut service =
@@ -56,6 +58,7 @@ pub async fn create(addr: &str, https: bool) {
             let tls_acceptor = ssl.build();
             let tcp_listener = TcpListener::bind(&addr).await.unwrap();
 
+            info!("Starting a server (with https)");
             loop {
                 if let Ok((tcp, _)) = tcp_listener.accept().await {
                     let ssl = Ssl::new(tls_acceptor.context()).unwrap();
@@ -75,6 +78,7 @@ pub async fn create(addr: &str, https: bool) {
             }
         }
     } else {
+        info!("Starting a server (over http, so no TLS)");
         // Using HTTP
         hyper::server::Server::bind(&addr).serve(service).await.unwrap()
     }
@@ -92,6 +96,12 @@ impl<C> Server<C> {
 }
 
 
+use jsonwebtoken::{decode, encode, errors::Error as JwtError, Algorithm, DecodingKey, EncodingKey, Header, TokenData, Validation};
+use serde::{Deserialize, Serialize};
+use swagger::auth::Authorization;
+use crate::server_auth;
+
+
 use multipart_v3::{
     Api,
     MultipartRelatedRequestPostResponse,
@@ -113,7 +123,7 @@ impl<C> Api<C> for Server<C> where C: Has<XSpanIdString> + Send + Sync
         context: &C) -> Result<MultipartRelatedRequestPostResponse, ApiError>
     {
         info!("multipart_related_request_post({:?}, {:?}, {:?}) - X-Span-ID: {:?}", required_binary_field, object_field, optional_binary_field, context.get().0.clone());
-        Err(ApiError("Generic failure".into()))
+        Err(ApiError("Api-Error: Operation is NOT implemented".into()))
     }
 
     async fn multipart_request_post(
@@ -125,7 +135,7 @@ impl<C> Api<C> for Server<C> where C: Has<XSpanIdString> + Send + Sync
         context: &C) -> Result<MultipartRequestPostResponse, ApiError>
     {
         info!("multipart_request_post(\"{}\", {:?}, {:?}, {:?}) - X-Span-ID: {:?}", string_field, binary_field, optional_string_field, object_field, context.get().0.clone());
-        Err(ApiError("Generic failure".into()))
+        Err(ApiError("Api-Error: Operation is NOT implemented".into()))
     }
 
     async fn multiple_identical_mime_types_post(
@@ -135,7 +145,7 @@ impl<C> Api<C> for Server<C> where C: Has<XSpanIdString> + Send + Sync
         context: &C) -> Result<MultipleIdenticalMimeTypesPostResponse, ApiError>
     {
         info!("multiple_identical_mime_types_post({:?}, {:?}) - X-Span-ID: {:?}", binary1, binary2, context.get().0.clone());
-        Err(ApiError("Generic failure".into()))
+        Err(ApiError("Api-Error: Operation is NOT implemented".into()))
     }
 
 }

samples/server/petstore/rust-server/output/multipart-v3/examples/server/server_auth.rs

@@ -0,0 +1,127 @@
+use swagger::{
+    ApiError,
+    auth::{Basic, Bearer},
+    Has, 
+    XSpanIdString};
+use multipart_v3::{AuthenticationApi, Claims};
+use crate::server::Server;
+use jsonwebtoken::{decode, errors as JwtError, decode_header, DecodingKey, TokenData, Validation};
+use swagger::auth::Authorization;
+use log::{error, debug};
+
+// NOTE: Set environment variable RUST_LOG to the name of the executable (or "cargo run") to activate console logging for all loglevels.
+//     See https://docs.rs/env_logger/latest/env_logger/  for more details
+
+
+/// Get a dummy claim with full permissions (all scopes) for testing purposes
+fn full_permission_claim() -> Claims {
+        Claims {
+            sub: "tester@acme.com".to_owned(), 
+            company: "ACME".to_owned(),
+            iss: "mini-bank-IDP".to_owned(),
+            aud: "org.acme.Resource_Server".to_string(),
+            // added a very long expiry time
+            exp: 10000000000,
+            // In this example code all available Scopes are added, so the current Bearer Token gets fully authorization.
+            scopes: [
+            ].join(", ")
+        }
+}
+
+
+
+/// Extract the data from a Bearer token using the provided Key (secret) and using the HS512-algorithm in this example. 
+fn extract_token_data(token: &str, key: &[u8]) -> Result<TokenData<Claims>, JwtError::Error> {
+    
+    // Ensure that you set the correct algorithm and correct key.
+    // See https://github.com/Keats/jsonwebtoken for more information.
+    let header = decode_header(token)?;
+    let validation = {
+        let mut validation = Validation::new(header.alg);
+        validation.set_audience(&["org.acme.Resource_Server"]);
+        validation.validate_exp = true;
+        validation
+    };
+
+    let token_data = decode::<Claims>(
+        &token,
+        &DecodingKey::from_secret(key),
+        &validation,
+    )?;
+
+    Ok(token_data)
+}
+
+/// Build a swagger-Authorization based on the claims (Assuming claims have been extracted from a validated token)
+fn build_authorization(claims: Claims) -> Authorization {
+    let mut scopes = std::collections::BTreeSet::<String>::new();
+    claims
+        .scopes
+        .split(",")
+        .map(|s| s.trim())
+        .for_each(|s| {let _ = scopes.insert(s.to_string()); });
+    let scopes = swagger::auth::Scopes::Some(scopes);
+
+    Authorization{
+        subject: claims.sub, 
+        scopes, 
+        issuer: Some(claims.iss)}
+}
+
+fn get_jwt_error_string(error: JwtError::Error) -> String {
+    match error.kind() {
+        JwtError::ErrorKind::InvalidSignature => "Incorrect token signature".to_owned(),
+        JwtError::ErrorKind::InvalidAlgorithm => "The Algorithm is not correct".to_owned(),
+        JwtError::ErrorKind::ExpiredSignature => "The token has expired".to_owned(),
+        JwtError::ErrorKind::Base64(e) => format!("Base64 decode failed: {e}"),
+        JwtError::ErrorKind::Json(e) => format!("JSON decoding: {e}"),
+        JwtError::ErrorKind::Utf8(e) => format!("Invalid UTF-8: {e}"),
+        _ => error.to_string()
+    }
+}
+
+
+impl<C> AuthenticationApi for Server<C> where C: Has<XSpanIdString> + Send + Sync {
+
+    /// Implementation of the method to map a Bearer-token to an Authorization
+    fn bearer_authorization(&self, bearer: &Bearer) -> Result<Authorization, ApiError> {
+        debug!("\tAuthorizationApi: Received Bearer-token, {bearer:#?}");
+
+        match extract_token_data(&bearer.token, b"secret") {
+            Ok(auth_data) => {
+                debug!("\tUnpack auth_data as: {auth_data:#?}");
+                let authorization = build_authorization(auth_data.claims);
+                Ok(authorization)
+            },
+            Err(err) => {
+                let msg = get_jwt_error_string(err);
+                error!("Failed to unpack Bearer-token: {msg}");
+                Err(ApiError(msg))
+            }
+        }
+    }
+
+    /// Implementation of the method to map an api-key to an Authorization
+    fn apikey_authorization(&self, api_key: &str) -> Result<Authorization, ApiError> {
+        debug!("\tAuthorizationApi: Received api-key, {api_key:#?}");
+
+        // TODO: insert the logic to map received apikey to the set of claims 
+        let claims = full_permission_claim();
+
+        // and build an authorization out of it
+        Ok(build_authorization(claims))
+    }
+    
+    /// Implementation of the method to map a basic authentication (username and password) to an Authorization
+    fn basic_authorization(&self, basic: &Basic) -> Result<Authorization, ApiError> {
+        debug!("\tAuthorizationApi: Received Basic-token, {basic:#?}");
+
+        // TODO: insert the logic to map received apikey to the set of claims 
+        let claims = full_permission_claim();
+
+        // and build an authorization out of it
+        Ok(build_authorization(claims))
+    }
+
+} 
+

samples/server/petstore/rust-server/output/multipart-v3/src/auth.rs

@@ -0,0 +1,62 @@
+use std::collections::BTreeSet;
+use crate::server::Authorization;
+use serde::{Deserialize, Serialize};
+use swagger::{ApiError, auth::{Basic, Bearer}};
+
+#[derive(Debug, Serialize, Deserialize)]
+pub struct Claims {
+    pub sub: String,
+    pub iss: String,
+    pub aud: String,
+    pub company: String,
+    pub exp: u64,
+    pub scopes: String,
+}
+
+
+pub trait AuthenticationApi {
+
+    /// Method should be implemented (see example-code) to map Bearer-token to an Authorization
+    fn bearer_authorization(&self, token: &Bearer) -> Result<Authorization, ApiError>;
+
+    /// Method should be implemented (see example-code) to map ApiKey to an Authorization
+    fn apikey_authorization(&self, token: &str) -> Result<Authorization, ApiError>;
+
+    /// Method should be implemented (see example-code) to map Basic (Username:password) to an Authorization
+    fn basic_authorization(&self, basic: &Basic) -> Result<Authorization, ApiError>;
+} 
+
+// Implement it for AllowAllAuthenticator (dummy is needed, but should not used as we have Bearer authorization)
+use swagger::auth::{AllowAllAuthenticator, RcBound, Scopes};
+
+fn dummy_authorization() -> Authorization {
+    // Is called when MakeAllowAllAuthenticator is added to the stack. This is not needed as we have Bearer-authorization in the example-code.
+    // However, if you want to use it anyway this can not be unimplemented, so dummy implementation added.
+    // unimplemented!()
+    Authorization{
+        subject: "Dummmy".to_owned(),
+        scopes: Scopes::Some(BTreeSet::new()), // create an empty scope, as this should not be used
+        issuer: None
+    }
+}
+
+impl<T, RC> AuthenticationApi for AllowAllAuthenticator<T, RC>
+where
+    RC: RcBound,
+    RC::Result: Send + 'static {
+
+    /// Get method to map Bearer-token to an Authorization
+    fn bearer_authorization(&self, _token: &Bearer) -> Result<Authorization, ApiError> {
+        Ok(dummy_authorization())
+    }
+
+    /// Get method to map api-key to an Authorization
+    fn apikey_authorization(&self, _apikey: &str) -> Result<Authorization, ApiError> {
+        Ok(dummy_authorization())
+    }
+
+    /// Get method to map basic token to an Authorization
+    fn basic_authorization(&self, _basic: &Basic) -> Result<Authorization, ApiError> {
+        Ok(dummy_authorization())
+    }
+}

samples/server/petstore/rust-server/output/multipart-v3/src/context.rs

@@ -8,7 +8,8 @@ use std::marker::PhantomData;
 use std::task::{Poll, Context};
 use swagger::auth::{AuthData, Authorization, Bearer, Scopes};
 use swagger::{EmptyContext, Has, Pop, Push, XSpanIdString};
-use crate::Api;
+use crate::{Api, AuthenticationApi};
+use log::error;
 
 pub struct MakeAddContext<T, A> {
     inner: T,
@@ -89,7 +90,7 @@ impl<T, A, B, C, D, ReqBody> Service<Request<ReqBody>> for AddContext<T, A, B, C
         B: Push<Option<AuthData>, Result=C>,
         C: Push<Option<Authorization>, Result=D>,
         D: Send + 'static,
-        T: Service<(Request<ReqBody>, D)>
+        T: Service<(Request<ReqBody>, D)> + AuthenticationApi
 {
     type Error = T::Error;
     type Future = T::Future;

samples/server/petstore/rust-server/output/multipart-v3/src/lib.rs

@@ -1,19 +1,26 @@
 #![allow(missing_docs, trivial_casts, unused_variables, unused_mut, unused_imports, unused_extern_crates, non_camel_case_types)]
 #![allow(unused_imports, unused_attributes)]
-#![allow(clippy::derive_partial_eq_without_eq, clippy::disallowed_names, clippy::too_many_arguments)]
+#![allow(clippy::derive_partial_eq_without_eq, clippy::disallowed_names)]
 
 use async_trait::async_trait;
 use futures::Stream;
 use std::error::Error;
+use std::collections::BTreeSet;
 use std::task::{Poll, Context};
 use swagger::{ApiError, ContextWrapper};
 use serde::{Serialize, Deserialize};
+use crate::server::Authorization;
+
 
 type ServiceError = Box<dyn Error + Send + Sync + 'static>;
 
 pub const BASE_PATH: &str = "";
 pub const API_VERSION: &str = "1.0.7";
 
+mod auth;
+pub use auth::{AuthenticationApi, Claims};
+
+
 #[derive(Debug, PartialEq, Serialize, Deserialize)]
 pub enum MultipartRelatedRequestPostResponse {
     /// OK

samples/server/petstore/rust-server/output/multipart-v3/src/server/mod.rs

@@ -19,8 +19,7 @@ use multipart::server::Multipart;
 use multipart::server::save::SaveResult;
 
 #[allow(unused_imports)]
-use crate::models;
-use crate::header;
+use crate::{models, header, AuthenticationApi};
 
 pub use crate::context;
 
@@ -32,6 +31,8 @@ use crate::{Api,
      MultipleIdenticalMimeTypesPostResponse
 };
 
+mod server_auth;
+
 mod paths {
     use lazy_static::lazy_static;
 
@@ -48,6 +49,7 @@ mod paths {
     pub(crate) static ID_MULTIPLE_IDENTICAL_MIME_TYPES: usize = 2;
 }
 
+
 pub struct MakeService<T, C> where
     T: Api<C> + Clone + Send + 'static,
     C: Has<XSpanIdString>  + Send + Sync + 'static
@@ -68,6 +70,7 @@ impl<T, C> MakeService<T, C> where
     }
 }
 
+
 impl<T, C, Target> hyper::service::Service<Target> for MakeService<T, C> where
     T: Api<C> + Clone + Send + 'static,
     C: Has<XSpanIdString>  + Send + Sync + 'static
@@ -206,11 +209,10 @@ impl<T, C> hyper::service::Service<(Request<Body>, C)> for Service<T, C> where
                                             Some("application/json") if param_object_field.is_none() => {
                                                 // Extract JSON part.
                                                 let deserializer = &mut serde_json::Deserializer::from_slice(part.body.as_slice());
-                                                let handle_unknown_field = |path: serde_ignored::Path<'_>| {
+                                                let json_data: models::MultipartRequestObjectField = match serde_ignored::deserialize(deserializer, |path| {
                                                     warn!("Ignoring unknown field in JSON part: {}", path);
                                                     unused_elements.push(path.to_string());
-                                                };
-                                                let json_data: models::MultipartRequestObjectField = match serde_ignored::deserialize(deserializer, handle_unknown_field) {
+                                                }) {
                                                     Ok(json_data) => json_data,
                                                     Err(e) => return Ok(Response::builder()
                                                                     .status(StatusCode::BAD_REQUEST)

samples/server/petstore/rust-server/output/multipart-v3/src/server/server_auth.rs

@@ -0,0 +1,28 @@
+use super::Service;
+use crate::{Api, AuthenticationApi};
+use swagger::{
+    ApiError,
+    Authorization, 
+    auth::{Basic, Bearer}, 
+    Has, 
+    XSpanIdString};
+
+impl<T,C> AuthenticationApi for Service<T, C> where
+T: Api<C> + Clone + Send + 'static + AuthenticationApi,
+C: Has<XSpanIdString> + Has<Option<Authorization>> + Send + Sync + 'static {
+
+    /// Passthrough of the task to the api-implementation
+    fn bearer_authorization(&self, token: &Bearer) -> Result<Authorization, ApiError> {
+        self.api_impl.bearer_authorization(token)
+    }
+
+    /// Passthrough of the task to the api-implementation
+    fn apikey_authorization(&self, token: &str) -> Result<Authorization, ApiError> {
+        self.api_impl.apikey_authorization(token)
+    }
+
+    /// Passthrough of the task to the api-implementation
+    fn basic_authorization(&self, basic: &Basic) -> Result<Authorization, ApiError> {
+        self.api_impl.basic_authorization(basic)
+    }
+}

samples/server/petstore/rust-server/output/no-example-v3/.openapi-generator/FILES

@@ -6,14 +6,18 @@ api/openapi.yaml
 docs/OpGetRequest.md
 docs/default_api.md
 examples/ca.pem
+examples/client/client_auth.rs
 examples/client/main.rs
 examples/server-chain.pem
 examples/server-key.pem
 examples/server/main.rs
 examples/server/server.rs
+examples/server/server_auth.rs
+src/auth.rs
 src/client/mod.rs
 src/context.rs
 src/header.rs
 src/lib.rs
 src/models.rs
 src/server/mod.rs
+src/server/server_auth.rs

samples/server/petstore/rust-server/output/no-example-v3/Cargo.toml

@@ -5,7 +5,7 @@ authors = ["OpenAPI Generator team and contributors"]
 description = "No description provided (generated by Openapi Generator https://github.com/openapitools/openapi-generator)"
 # Override this license by providing a License Object in the OpenAPI.
 license = "Unlicense"
-edition = "2021"
+edition = "2018"
 
 [features]
 default = ["client", "server"]
@@ -59,6 +59,9 @@ frunk_core = { version = "0.3.0", optional = true }
 frunk-enum-derive = { version = "0.2.0", optional = true }
 frunk-enum-core = { version = "0.2.0", optional = true }
 
+# Bearer authentication
+jsonwebtoken = { version = "9.3.0", optional = false }
+
 [dev-dependencies]
 clap = "2.25"
 env_logger = "0.7"

samples/server/petstore/rust-server/output/no-example-v3/examples/client/client_auth.rs

@@ -0,0 +1,17 @@
+use no_example_v3::Claims;
+use jsonwebtoken::{encode, errors::Error as JwtError, Algorithm, EncodingKey, Header};
+use log::debug;
+
+/// build an encrypted token with the provided claims.
+pub fn build_token(my_claims: Claims, key: &[u8]) -> Result<String, JwtError> {
+
+    // Ensure that you set the correct algorithm and correct key.
+    // See https://github.com/Keats/jsonwebtoken for more information.
+    let header =
+        Header { kid: Some("signing_key".to_owned()), alg: Algorithm::HS512, ..Default::default() };
+
+    let token = encode(&header, &my_claims, &EncodingKey::from_secret(key))?;
+    debug!("Derived token: {:?}", token);
+
+    Ok(token)
+}

samples/server/petstore/rust-server/output/no-example-v3/examples/client/main.rs

@@ -4,11 +4,14 @@
 #[allow(unused_imports)]
 use futures::{future, Stream, stream};
 #[allow(unused_imports)]
-use no_example_v3::{Api, ApiNoContext, Client, ContextWrapperExt, models,
+use no_example_v3::{Api, ApiNoContext, Claims, Client, ContextWrapperExt, models,
                       OpGetResponse,
                      };
 use clap::{App, Arg};
 
+// NOTE: Set environment variable RUST_LOG to the name of the executable (or "cargo run") to activate console logging for all loglevels.
+//     See https://docs.rs/env_logger/latest/env_logger/  for more details
+
 #[allow(unused_imports)]
 use log::info;
 
@@ -18,6 +21,10 @@ use swagger::{AuthData, ContextBuilder, EmptyContext, Has, Push, XSpanIdString};
 
 type ClientContext = swagger::make_context_ty!(ContextBuilder, EmptyContext, Option<AuthData>, XSpanIdString);
 
+mod client_auth;
+use client_auth::build_token;
+
+
 // rt may be unused if there are no examples
 #[allow(unused_mut)]
 fn main() {
@@ -45,6 +52,32 @@ fn main() {
             .help("Port to contact"))
         .get_matches();
 
+    // Create Bearer-token with a fixed key (secret) for test purposes.
+    // In a real (production) system this Bearer token should be obtained via an external Identity/Authentication-server
+    // Ensure that you set the correct algorithm and encodingkey that matches what is used on the server side.
+    // See https://github.com/Keats/jsonwebtoken for more information
+
+    let auth_token = build_token(
+            Claims {
+                sub: "tester@acme.com".to_owned(), 
+                company: "ACME".to_owned(),
+                iss: "my_identity_provider".to_owned(),
+                // added a very long expiry time
+                aud: "org.acme.Resource_Server".to_string(),
+                exp: 10000000000,
+                // In this example code all available Scopes are added, so the current Bearer Token gets fully authorization.
+                scopes: [
+                ].join(", ")
+            }, 
+            b"secret").unwrap();
+
+    let auth_data = if !auth_token.is_empty() {
+        Some(AuthData::Bearer(swagger::auth::Bearer { token: auth_token}))
+    } else {
+        // No Bearer-token available, so return None
+        None
+    };
+
     let is_https = matches.is_present("https");
     let base_url = format!("{}://{}:{}",
         if is_https { "https" } else { "http" },
@@ -52,7 +85,7 @@ fn main() {
         matches.value_of("port").unwrap());
 
     let context: ClientContext =
-        swagger::make_context!(ContextBuilder, EmptyContext, None as Option<AuthData>, XSpanIdString::default());
+        swagger::make_context!(ContextBuilder, EmptyContext, auth_data, XSpanIdString::default());
 
     let mut client : Box<dyn ApiNoContext<ClientContext>> = if matches.is_present("https") {
         // Using Simple HTTPS

samples/server/petstore/rust-server/output/no-example-v3/examples/server/main.rs

@@ -1,10 +1,13 @@
 //! Main binary entry point for no_example_v3 implementation.
+// This is the amended version that adds Authorization via Inversion of Control.
 
 #![allow(missing_docs)]
 
+
 use clap::{App, Arg};
 
 mod server;
+mod server_auth;
 
 
 /// Create custom server, wire it to the autogenerated router,

samples/server/petstore/rust-server/output/no-example-v3/examples/server/server.rs

@@ -30,7 +30,9 @@ pub async fn create(addr: &str, https: bool) {
 
     let service = MakeService::new(server);
 
-    let service = MakeAllowAllAuthenticator::new(service, "cosmo");
+    // This pushes a fourth layer of the middleware-stack even though Swagger assumes only three levels.
+    // This fourth layer creates an accept-all policy, hower the example-code already acchieves the same via a Bearer-token with full permissions, so next line is not needed (anymore).  
+    // let service = MakeAllowAllAuthenticator::new(service, "cosmo");
 
     #[allow(unused_mut)]
     let mut service =
@@ -56,6 +58,7 @@ pub async fn create(addr: &str, https: bool) {
             let tls_acceptor = ssl.build();
             let tcp_listener = TcpListener::bind(&addr).await.unwrap();
 
+            info!("Starting a server (with https)");
             loop {
                 if let Ok((tcp, _)) = tcp_listener.accept().await {
                     let ssl = Ssl::new(tls_acceptor.context()).unwrap();
@@ -75,6 +78,7 @@ pub async fn create(addr: &str, https: bool) {
             }
         }
     } else {
+        info!("Starting a server (over http, so no TLS)");
         // Using HTTP
         hyper::server::Server::bind(&addr).serve(service).await.unwrap()
     }
@@ -92,6 +96,12 @@ impl<C> Server<C> {
 }
 
 
+use jsonwebtoken::{decode, encode, errors::Error as JwtError, Algorithm, DecodingKey, EncodingKey, Header, TokenData, Validation};
+use serde::{Deserialize, Serialize};
+use swagger::auth::Authorization;
+use crate::server_auth;
+
+
 use no_example_v3::{
     Api,
     OpGetResponse,
@@ -109,7 +119,7 @@ impl<C> Api<C> for Server<C> where C: Has<XSpanIdString> + Send + Sync
         context: &C) -> Result<OpGetResponse, ApiError>
     {
         info!("op_get({:?}) - X-Span-ID: {:?}", op_get_request, context.get().0.clone());
-        Err(ApiError("Generic failure".into()))
+        Err(ApiError("Api-Error: Operation is NOT implemented".into()))
     }
 
 }

samples/server/petstore/rust-server/output/no-example-v3/examples/server/server_auth.rs

@@ -0,0 +1,127 @@
+use swagger::{
+    ApiError,
+    auth::{Basic, Bearer},
+    Has, 
+    XSpanIdString};
+use no_example_v3::{AuthenticationApi, Claims};
+use crate::server::Server;
+use jsonwebtoken::{decode, errors as JwtError, decode_header, DecodingKey, TokenData, Validation};
+use swagger::auth::Authorization;
+use log::{error, debug};
+
+// NOTE: Set environment variable RUST_LOG to the name of the executable (or "cargo run") to activate console logging for all loglevels.
+//     See https://docs.rs/env_logger/latest/env_logger/  for more details
+
+
+/// Get a dummy claim with full permissions (all scopes) for testing purposes
+fn full_permission_claim() -> Claims {
+        Claims {
+            sub: "tester@acme.com".to_owned(), 
+            company: "ACME".to_owned(),
+            iss: "mini-bank-IDP".to_owned(),
+            aud: "org.acme.Resource_Server".to_string(),
+            // added a very long expiry time
+            exp: 10000000000,
+            // In this example code all available Scopes are added, so the current Bearer Token gets fully authorization.
+            scopes: [
+            ].join(", ")
+        }
+}
+
+
+
+/// Extract the data from a Bearer token using the provided Key (secret) and using the HS512-algorithm in this example. 
+fn extract_token_data(token: &str, key: &[u8]) -> Result<TokenData<Claims>, JwtError::Error> {
+    
+    // Ensure that you set the correct algorithm and correct key.
+    // See https://github.com/Keats/jsonwebtoken for more information.
+    let header = decode_header(token)?;
+    let validation = {
+        let mut validation = Validation::new(header.alg);
+        validation.set_audience(&["org.acme.Resource_Server"]);
+        validation.validate_exp = true;
+        validation
+    };
+
+    let token_data = decode::<Claims>(
+        &token,
+        &DecodingKey::from_secret(key),
+        &validation,
+    )?;
+
+    Ok(token_data)
+}
+
+/// Build a swagger-Authorization based on the claims (Assuming claims have been extracted from a validated token)
+fn build_authorization(claims: Claims) -> Authorization {
+    let mut scopes = std::collections::BTreeSet::<String>::new();
+    claims
+        .scopes
+        .split(",")
+        .map(|s| s.trim())
+        .for_each(|s| {let _ = scopes.insert(s.to_string()); });
+    let scopes = swagger::auth::Scopes::Some(scopes);
+
+    Authorization{
+        subject: claims.sub, 
+        scopes, 
+        issuer: Some(claims.iss)}
+}
+
+fn get_jwt_error_string(error: JwtError::Error) -> String {
+    match error.kind() {
+        JwtError::ErrorKind::InvalidSignature => "Incorrect token signature".to_owned(),
+        JwtError::ErrorKind::InvalidAlgorithm => "The Algorithm is not correct".to_owned(),
+        JwtError::ErrorKind::ExpiredSignature => "The token has expired".to_owned(),
+        JwtError::ErrorKind::Base64(e) => format!("Base64 decode failed: {e}"),
+        JwtError::ErrorKind::Json(e) => format!("JSON decoding: {e}"),
+        JwtError::ErrorKind::Utf8(e) => format!("Invalid UTF-8: {e}"),
+        _ => error.to_string()
+    }
+}
+
+
+impl<C> AuthenticationApi for Server<C> where C: Has<XSpanIdString> + Send + Sync {
+
+    /// Implementation of the method to map a Bearer-token to an Authorization
+    fn bearer_authorization(&self, bearer: &Bearer) -> Result<Authorization, ApiError> {
+        debug!("\tAuthorizationApi: Received Bearer-token, {bearer:#?}");
+
+        match extract_token_data(&bearer.token, b"secret") {
+            Ok(auth_data) => {
+                debug!("\tUnpack auth_data as: {auth_data:#?}");
+                let authorization = build_authorization(auth_data.claims);
+                Ok(authorization)
+            },
+            Err(err) => {
+                let msg = get_jwt_error_string(err);
+                error!("Failed to unpack Bearer-token: {msg}");
+                Err(ApiError(msg))
+            }
+        }
+    }
+
+    /// Implementation of the method to map an api-key to an Authorization
+    fn apikey_authorization(&self, api_key: &str) -> Result<Authorization, ApiError> {
+        debug!("\tAuthorizationApi: Received api-key, {api_key:#?}");
+
+        // TODO: insert the logic to map received apikey to the set of claims 
+        let claims = full_permission_claim();
+
+        // and build an authorization out of it
+        Ok(build_authorization(claims))
+    }
+    
+    /// Implementation of the method to map a basic authentication (username and password) to an Authorization
+    fn basic_authorization(&self, basic: &Basic) -> Result<Authorization, ApiError> {
+        debug!("\tAuthorizationApi: Received Basic-token, {basic:#?}");
+
+        // TODO: insert the logic to map received apikey to the set of claims 
+        let claims = full_permission_claim();
+
+        // and build an authorization out of it
+        Ok(build_authorization(claims))
+    }
+
+} 
+

samples/server/petstore/rust-server/output/no-example-v3/src/auth.rs

@@ -0,0 +1,62 @@
+use std::collections::BTreeSet;
+use crate::server::Authorization;
+use serde::{Deserialize, Serialize};
+use swagger::{ApiError, auth::{Basic, Bearer}};
+
+#[derive(Debug, Serialize, Deserialize)]
+pub struct Claims {
+    pub sub: String,
+    pub iss: String,
+    pub aud: String,
+    pub company: String,
+    pub exp: u64,
+    pub scopes: String,
+}
+
+
+pub trait AuthenticationApi {
+
+    /// Method should be implemented (see example-code) to map Bearer-token to an Authorization
+    fn bearer_authorization(&self, token: &Bearer) -> Result<Authorization, ApiError>;
+
+    /// Method should be implemented (see example-code) to map ApiKey to an Authorization
+    fn apikey_authorization(&self, token: &str) -> Result<Authorization, ApiError>;
+
+    /// Method should be implemented (see example-code) to map Basic (Username:password) to an Authorization
+    fn basic_authorization(&self, basic: &Basic) -> Result<Authorization, ApiError>;
+} 
+
+// Implement it for AllowAllAuthenticator (dummy is needed, but should not used as we have Bearer authorization)
+use swagger::auth::{AllowAllAuthenticator, RcBound, Scopes};
+
+fn dummy_authorization() -> Authorization {
+    // Is called when MakeAllowAllAuthenticator is added to the stack. This is not needed as we have Bearer-authorization in the example-code.
+    // However, if you want to use it anyway this can not be unimplemented, so dummy implementation added.
+    // unimplemented!()
+    Authorization{
+        subject: "Dummmy".to_owned(),
+        scopes: Scopes::Some(BTreeSet::new()), // create an empty scope, as this should not be used
+        issuer: None
+    }
+}
+
+impl<T, RC> AuthenticationApi for AllowAllAuthenticator<T, RC>
+where
+    RC: RcBound,
+    RC::Result: Send + 'static {
+
+    /// Get method to map Bearer-token to an Authorization
+    fn bearer_authorization(&self, _token: &Bearer) -> Result<Authorization, ApiError> {
+        Ok(dummy_authorization())
+    }
+
+    /// Get method to map api-key to an Authorization
+    fn apikey_authorization(&self, _apikey: &str) -> Result<Authorization, ApiError> {
+        Ok(dummy_authorization())
+    }
+
+    /// Get method to map basic token to an Authorization
+    fn basic_authorization(&self, _basic: &Basic) -> Result<Authorization, ApiError> {
+        Ok(dummy_authorization())
+    }
+}

samples/server/petstore/rust-server/output/no-example-v3/src/context.rs

@@ -8,7 +8,8 @@ use std::marker::PhantomData;
 use std::task::{Poll, Context};
 use swagger::auth::{AuthData, Authorization, Bearer, Scopes};
 use swagger::{EmptyContext, Has, Pop, Push, XSpanIdString};
-use crate::Api;
+use crate::{Api, AuthenticationApi};
+use log::error;
 
 pub struct MakeAddContext<T, A> {
     inner: T,
@@ -89,7 +90,7 @@ impl<T, A, B, C, D, ReqBody> Service<Request<ReqBody>> for AddContext<T, A, B, C
         B: Push<Option<AuthData>, Result=C>,
         C: Push<Option<Authorization>, Result=D>,
         D: Send + 'static,
-        T: Service<(Request<ReqBody>, D)>
+        T: Service<(Request<ReqBody>, D)> + AuthenticationApi
 {
     type Error = T::Error;
     type Future = T::Future;

samples/server/petstore/rust-server/output/no-example-v3/src/lib.rs

@@ -1,19 +1,26 @@
 #![allow(missing_docs, trivial_casts, unused_variables, unused_mut, unused_imports, unused_extern_crates, non_camel_case_types)]
 #![allow(unused_imports, unused_attributes)]
-#![allow(clippy::derive_partial_eq_without_eq, clippy::disallowed_names, clippy::too_many_arguments)]
+#![allow(clippy::derive_partial_eq_without_eq, clippy::disallowed_names)]
 
 use async_trait::async_trait;
 use futures::Stream;
 use std::error::Error;
+use std::collections::BTreeSet;
 use std::task::{Poll, Context};
 use swagger::{ApiError, ContextWrapper};
 use serde::{Serialize, Deserialize};
+use crate::server::Authorization;
+
 
 type ServiceError = Box<dyn Error + Send + Sync + 'static>;
 
 pub const BASE_PATH: &str = "";
 pub const API_VERSION: &str = "0.0.1";
 
+mod auth;
+pub use auth::{AuthenticationApi, Claims};
+
+
 #[derive(Debug, PartialEq, Serialize, Deserialize)]
 pub enum OpGetResponse {
     /// OK

samples/server/petstore/rust-server/output/no-example-v3/src/server/mod.rs

@@ -14,8 +14,7 @@ use swagger::auth::Scopes;
 use url::form_urlencoded;
 
 #[allow(unused_imports)]
-use crate::models;
-use crate::header;
+use crate::{models, header, AuthenticationApi};
 
 pub use crate::context;
 
@@ -25,6 +24,8 @@ use crate::{Api,
      OpGetResponse
 };
 
+mod server_auth;
+
 mod paths {
     use lazy_static::lazy_static;
 
@@ -37,6 +38,7 @@ mod paths {
     pub(crate) static ID_OP: usize = 0;
 }
 
+
 pub struct MakeService<T, C> where
     T: Api<C> + Clone + Send + 'static,
     C: Has<XSpanIdString>  + Send + Sync + 'static
@@ -57,6 +59,7 @@ impl<T, C> MakeService<T, C> where
     }
 }
 
+
 impl<T, C, Target> hyper::service::Service<Target> for MakeService<T, C> where
     T: Api<C> + Clone + Send + 'static,
     C: Has<XSpanIdString>  + Send + Sync + 'static
@@ -150,11 +153,10 @@ impl<T, C> hyper::service::Service<(Request<Body>, C)> for Service<T, C> where
                                 let mut unused_elements = Vec::new();
                                 let param_op_get_request: Option<models::OpGetRequest> = if !body.is_empty() {
                                     let deserializer = &mut serde_json::Deserializer::from_slice(&body);
-                                    let handle_unknown_field = |path: serde_ignored::Path<'_>| {
+                                    match serde_ignored::deserialize(deserializer, |path| {
                                             warn!("Ignoring unknown field in body: {}", path);
                                             unused_elements.push(path.to_string());
-                                    };
-                                    match serde_ignored::deserialize(deserializer, handle_unknown_field) {
+                                    }) {
                                         Ok(param_op_get_request) => param_op_get_request,
                                         Err(e) => return Ok(Response::builder()
                                                         .status(StatusCode::BAD_REQUEST)

samples/server/petstore/rust-server/output/no-example-v3/src/server/server_auth.rs

@@ -0,0 +1,28 @@
+use super::Service;
+use crate::{Api, AuthenticationApi};
+use swagger::{
+    ApiError,
+    Authorization, 
+    auth::{Basic, Bearer}, 
+    Has, 
+    XSpanIdString};
+
+impl<T,C> AuthenticationApi for Service<T, C> where
+T: Api<C> + Clone + Send + 'static + AuthenticationApi,
+C: Has<XSpanIdString> + Has<Option<Authorization>> + Send + Sync + 'static {
+
+    /// Passthrough of the task to the api-implementation
+    fn bearer_authorization(&self, token: &Bearer) -> Result<Authorization, ApiError> {
+        self.api_impl.bearer_authorization(token)
+    }
+
+    /// Passthrough of the task to the api-implementation
+    fn apikey_authorization(&self, token: &str) -> Result<Authorization, ApiError> {
+        self.api_impl.apikey_authorization(token)
+    }
+
+    /// Passthrough of the task to the api-implementation
+    fn basic_authorization(&self, basic: &Basic) -> Result<Authorization, ApiError> {
+        self.api_impl.basic_authorization(basic)
+    }
+}

samples/server/petstore/rust-server/output/openapi-v3/.openapi-generator/FILES

@@ -37,12 +37,15 @@ docs/XmlObject.md
 docs/default_api.md
 docs/repo_api.md
 examples/ca.pem
+examples/client/client_auth.rs
 examples/client/main.rs
 examples/client/server.rs
 examples/server-chain.pem
 examples/server-key.pem
 examples/server/main.rs
 examples/server/server.rs
+examples/server/server_auth.rs
+src/auth.rs
 src/client/callbacks.rs
 src/client/mod.rs
 src/context.rs
@@ -51,3 +54,4 @@ src/lib.rs
 src/models.rs
 src/server/callbacks.rs
 src/server/mod.rs
+src/server/server_auth.rs

samples/server/petstore/rust-server/output/openapi-v3/Cargo.toml

@@ -5,7 +5,7 @@ authors = ["OpenAPI Generator team and contributors"]
 description = "API under test"
 # Override this license by providing a License Object in the OpenAPI.
 license = "Unlicense"
-edition = "2021"
+edition = "2018"
 
 [features]
 default = ["client", "server"]
@@ -65,6 +65,9 @@ frunk_core = { version = "0.3.0", optional = true }
 frunk-enum-derive = { version = "0.2.0", optional = true }
 frunk-enum-core = { version = "0.2.0", optional = true }
 
+# Bearer authentication
+jsonwebtoken = { version = "9.3.0", optional = false }
+
 [dev-dependencies]
 clap = "2.25"
 env_logger = "0.7"

samples/server/petstore/rust-server/output/openapi-v3/examples/client/client_auth.rs

@@ -0,0 +1,17 @@
+use openapi_v3::Claims;
+use jsonwebtoken::{encode, errors::Error as JwtError, Algorithm, EncodingKey, Header};
+use log::debug;
+
+/// build an encrypted token with the provided claims.
+pub fn build_token(my_claims: Claims, key: &[u8]) -> Result<String, JwtError> {
+
+    // Ensure that you set the correct algorithm and correct key.
+    // See https://github.com/Keats/jsonwebtoken for more information.
+    let header =
+        Header { kid: Some("signing_key".to_owned()), alg: Algorithm::HS512, ..Default::default() };
+
+    let token = encode(&header, &my_claims, &EncodingKey::from_secret(key))?;
+    debug!("Derived token: {:?}", token);
+
+    Ok(token)
+}

samples/server/petstore/rust-server/output/openapi-v3/examples/client/main.rs

@@ -5,7 +5,7 @@ mod server;
 #[allow(unused_imports)]
 use futures::{future, Stream, stream};
 #[allow(unused_imports)]
-use openapi_v3::{Api, ApiNoContext, Client, ContextWrapperExt, models,
+use openapi_v3::{Api, ApiNoContext, Claims, Client, ContextWrapperExt, models,
                       AnyOfGetResponse,
                       CallbackWithHeaderPostResponse,
                       ComplexQueryParamGetResponse,
@@ -35,6 +35,9 @@ use openapi_v3::{Api, ApiNoContext, Client, ContextWrapperExt, models,
                      };
 use clap::{App, Arg};
 
+// NOTE: Set environment variable RUST_LOG to the name of the executable (or "cargo run") to activate console logging for all loglevels.
+//     See https://docs.rs/env_logger/latest/env_logger/  for more details
+
 #[allow(unused_imports)]
 use log::info;
 
@@ -44,6 +47,10 @@ use swagger::{AuthData, ContextBuilder, EmptyContext, Has, Push, XSpanIdString};
 
 type ClientContext = swagger::make_context_ty!(ContextBuilder, EmptyContext, Option<AuthData>, XSpanIdString);
 
+mod client_auth;
+use client_auth::build_token;
+
+
 // rt may be unused if there are no examples
 #[allow(unused_mut)]
 fn main() {
@@ -96,6 +103,34 @@ fn main() {
             .help("Port to contact"))
         .get_matches();
 
+    // Create Bearer-token with a fixed key (secret) for test purposes.
+    // In a real (production) system this Bearer token should be obtained via an external Identity/Authentication-server
+    // Ensure that you set the correct algorithm and encodingkey that matches what is used on the server side.
+    // See https://github.com/Keats/jsonwebtoken for more information
+
+    let auth_token = build_token(
+            Claims {
+                sub: "tester@acme.com".to_owned(), 
+                company: "ACME".to_owned(),
+                iss: "my_identity_provider".to_owned(),
+                // added a very long expiry time
+                aud: "org.acme.Resource_Server".to_string(),
+                exp: 10000000000,
+                // In this example code all available Scopes are added, so the current Bearer Token gets fully authorization.
+                scopes: [
+                            "test.read",
+                            "test.write",
+                ].join(", ")
+            }, 
+            b"secret").unwrap();
+
+    let auth_data = if !auth_token.is_empty() {
+        Some(AuthData::Bearer(swagger::auth::Bearer { token: auth_token}))
+    } else {
+        // No Bearer-token available, so return None
+        None
+    };
+
     let is_https = matches.is_present("https");
     let base_url = format!("{}://{}:{}",
         if is_https { "https" } else { "http" },
@@ -103,7 +138,7 @@ fn main() {
         matches.value_of("port").unwrap());
 
     let context: ClientContext =
-        swagger::make_context!(ContextBuilder, EmptyContext, None as Option<AuthData>, XSpanIdString::default());
+        swagger::make_context!(ContextBuilder, EmptyContext, auth_data, XSpanIdString::default());
 
     let mut client : Box<dyn ApiNoContext<ClientContext>> = if matches.is_present("https") {
         // Using Simple HTTPS

samples/server/petstore/rust-server/output/openapi-v3/examples/client/server.rs

@@ -30,7 +30,9 @@ pub async fn create(addr: &str, https: bool) {
 
     let service = MakeService::new(server);
 
-    let service = MakeAllowAllAuthenticator::new(service, "cosmo");
+    // This pushes a fourth layer of the middleware-stack even though Swagger assumes only three levels.
+    // This fourth layer creates an accept-all policy, hower the example-code already acchieves the same via a Bearer-token with full permissions, so next line is not needed (anymore).  
+    // let service = MakeAllowAllAuthenticator::new(service, "cosmo");
 
     #[allow(unused_mut)]
     let mut service =
@@ -56,6 +58,7 @@ pub async fn create(addr: &str, https: bool) {
             let tls_acceptor = ssl.build();
             let tcp_listener = TcpListener::bind(&addr).await.unwrap();
 
+            info!("Starting a server (with https)");
             loop {
                 if let Ok((tcp, _)) = tcp_listener.accept().await {
                     let ssl = Ssl::new(tls_acceptor.context()).unwrap();
@@ -75,6 +78,7 @@ pub async fn create(addr: &str, https: bool) {
             }
         }
     } else {
+        info!("Starting a server (over http, so no TLS)");
         // Using HTTP
         hyper::server::Server::bind(&addr).serve(service).await.unwrap()
     }
@@ -108,7 +112,7 @@ impl<C> CallbackApi<C> for Server<C> where C: Has<XSpanIdString> + Send + Sync
         context: &C) -> Result<CallbackCallbackWithHeaderPostResponse, ApiError>
     {
         info!("callback_callback_with_header_post({:?}) - X-Span-ID: {:?}", information, context.get().0.clone());
-        Err(ApiError("Generic failure".into()))
+        Err(ApiError("Api-Error: Operation is NOT implemented".into()))
     }
 
     async fn callback_callback_post(
@@ -117,7 +121,7 @@ impl<C> CallbackApi<C> for Server<C> where C: Has<XSpanIdString> + Send + Sync
         context: &C) -> Result<CallbackCallbackPostResponse, ApiError>
     {
         info!("callback_callback_post() - X-Span-ID: {:?}", context.get().0.clone());
-        Err(ApiError("Generic failure".into()))
+        Err(ApiError("Api-Error: Operation is NOT implemented".into()))
     }
 
 }

samples/server/petstore/rust-server/output/openapi-v3/examples/server/main.rs

@@ -1,10 +1,13 @@
 //! Main binary entry point for openapi_v3 implementation.
+// This is the amended version that adds Authorization via Inversion of Control.
 
 #![allow(missing_docs)]
 
+
 use clap::{App, Arg};
 
 mod server;
+mod server_auth;
 
 
 /// Create custom server, wire it to the autogenerated router,

samples/server/petstore/rust-server/output/openapi-v3/examples/server/server.rs

@@ -30,7 +30,9 @@ pub async fn create(addr: &str, https: bool) {
 
     let service = MakeService::new(server);
 
-    let service = MakeAllowAllAuthenticator::new(service, "cosmo");
+    // This pushes a fourth layer of the middleware-stack even though Swagger assumes only three levels.
+    // This fourth layer creates an accept-all policy, hower the example-code already acchieves the same via a Bearer-token with full permissions, so next line is not needed (anymore).  
+    // let service = MakeAllowAllAuthenticator::new(service, "cosmo");
 
     #[allow(unused_mut)]
     let mut service =
@@ -56,6 +58,7 @@ pub async fn create(addr: &str, https: bool) {
             let tls_acceptor = ssl.build();
             let tcp_listener = TcpListener::bind(&addr).await.unwrap();
 
+            info!("Starting a server (with https)");
             loop {
                 if let Ok((tcp, _)) = tcp_listener.accept().await {
                     let ssl = Ssl::new(tls_acceptor.context()).unwrap();
@@ -75,6 +78,7 @@ pub async fn create(addr: &str, https: bool) {
             }
         }
     } else {
+        info!("Starting a server (over http, so no TLS)");
         // Using HTTP
         hyper::server::Server::bind(&addr).serve(service).await.unwrap()
     }
@@ -92,6 +96,12 @@ impl<C> Server<C> {
 }
 
 
+use jsonwebtoken::{decode, encode, errors::Error as JwtError, Algorithm, DecodingKey, EncodingKey, Header, TokenData, Validation};
+use serde::{Deserialize, Serialize};
+use swagger::auth::Authorization;
+use crate::server_auth;
+
+
 use openapi_v3::{
     Api,
     AnyOfGetResponse,
@@ -134,7 +144,7 @@ impl<C> Api<C> for Server<C> where C: Has<XSpanIdString> + Send + Sync
         context: &C) -> Result<AnyOfGetResponse, ApiError>
     {
         info!("any_of_get({:?}) - X-Span-ID: {:?}", any_of, context.get().0.clone());
-        Err(ApiError("Generic failure".into()))
+        Err(ApiError("Api-Error: Operation is NOT implemented".into()))
     }
 
     async fn callback_with_header_post(
@@ -143,7 +153,7 @@ impl<C> Api<C> for Server<C> where C: Has<XSpanIdString> + Send + Sync
         context: &C) -> Result<CallbackWithHeaderPostResponse, ApiError>
     {
         info!("callback_with_header_post(\"{}\") - X-Span-ID: {:?}", url, context.get().0.clone());
-        Err(ApiError("Generic failure".into()))
+        Err(ApiError("Api-Error: Operation is NOT implemented".into()))
     }
 
     async fn complex_query_param_get(
@@ -152,7 +162,7 @@ impl<C> Api<C> for Server<C> where C: Has<XSpanIdString> + Send + Sync
         context: &C) -> Result<ComplexQueryParamGetResponse, ApiError>
     {
         info!("complex_query_param_get({:?}) - X-Span-ID: {:?}", list_of_strings, context.get().0.clone());
-        Err(ApiError("Generic failure".into()))
+        Err(ApiError("Api-Error: Operation is NOT implemented".into()))
     }
 
     async fn enum_in_path_path_param_get(
@@ -161,7 +171,7 @@ impl<C> Api<C> for Server<C> where C: Has<XSpanIdString> + Send + Sync
         context: &C) -> Result<EnumInPathPathParamGetResponse, ApiError>
     {
         info!("enum_in_path_path_param_get({:?}) - X-Span-ID: {:?}", path_param, context.get().0.clone());
-        Err(ApiError("Generic failure".into()))
+        Err(ApiError("Api-Error: Operation is NOT implemented".into()))
     }
 
     async fn json_complex_query_param_get(
@@ -170,7 +180,7 @@ impl<C> Api<C> for Server<C> where C: Has<XSpanIdString> + Send + Sync
         context: &C) -> Result<JsonComplexQueryParamGetResponse, ApiError>
     {
         info!("json_complex_query_param_get({:?}) - X-Span-ID: {:?}", list_of_strings, context.get().0.clone());
-        Err(ApiError("Generic failure".into()))
+        Err(ApiError("Api-Error: Operation is NOT implemented".into()))
     }
 
     async fn mandatory_request_header_get(
@@ -179,7 +189,7 @@ impl<C> Api<C> for Server<C> where C: Has<XSpanIdString> + Send + Sync
         context: &C) -> Result<MandatoryRequestHeaderGetResponse, ApiError>
     {
         info!("mandatory_request_header_get(\"{}\") - X-Span-ID: {:?}", x_header, context.get().0.clone());
-        Err(ApiError("Generic failure".into()))
+        Err(ApiError("Api-Error: Operation is NOT implemented".into()))
     }
 
     async fn merge_patch_json_get(
@@ -187,7 +197,7 @@ impl<C> Api<C> for Server<C> where C: Has<XSpanIdString> + Send + Sync
         context: &C) -> Result<MergePatchJsonGetResponse, ApiError>
     {
         info!("merge_patch_json_get() - X-Span-ID: {:?}", context.get().0.clone());
-        Err(ApiError("Generic failure".into()))
+        Err(ApiError("Api-Error: Operation is NOT implemented".into()))
     }
 
     /// Get some stuff.
@@ -196,7 +206,7 @@ impl<C> Api<C> for Server<C> where C: Has<XSpanIdString> + Send + Sync
         context: &C) -> Result<MultigetGetResponse, ApiError>
     {
         info!("multiget_get() - X-Span-ID: {:?}", context.get().0.clone());
-        Err(ApiError("Generic failure".into()))
+        Err(ApiError("Api-Error: Operation is NOT implemented".into()))
     }
 
     async fn multiple_auth_scheme_get(
@@ -204,7 +214,7 @@ impl<C> Api<C> for Server<C> where C: Has<XSpanIdString> + Send + Sync
         context: &C) -> Result<MultipleAuthSchemeGetResponse, ApiError>
     {
         info!("multiple_auth_scheme_get() - X-Span-ID: {:?}", context.get().0.clone());
-        Err(ApiError("Generic failure".into()))
+        Err(ApiError("Api-Error: Operation is NOT implemented".into()))
     }
 
     async fn one_of_get(
@@ -212,7 +222,7 @@ impl<C> Api<C> for Server<C> where C: Has<XSpanIdString> + Send + Sync
         context: &C) -> Result<OneOfGetResponse, ApiError>
     {
         info!("one_of_get() - X-Span-ID: {:?}", context.get().0.clone());
-        Err(ApiError("Generic failure".into()))
+        Err(ApiError("Api-Error: Operation is NOT implemented".into()))
     }
 
     async fn override_server_get(
@@ -220,7 +230,7 @@ impl<C> Api<C> for Server<C> where C: Has<XSpanIdString> + Send + Sync
         context: &C) -> Result<OverrideServerGetResponse, ApiError>
     {
         info!("override_server_get() - X-Span-ID: {:?}", context.get().0.clone());
-        Err(ApiError("Generic failure".into()))
+        Err(ApiError("Api-Error: Operation is NOT implemented".into()))
     }
 
     /// Get some stuff with parameters.
@@ -232,7 +242,7 @@ impl<C> Api<C> for Server<C> where C: Has<XSpanIdString> + Send + Sync
         context: &C) -> Result<ParamgetGetResponse, ApiError>
     {
         info!("paramget_get({:?}, {:?}, {:?}) - X-Span-ID: {:?}", uuid, some_object, some_list, context.get().0.clone());
-        Err(ApiError("Generic failure".into()))
+        Err(ApiError("Api-Error: Operation is NOT implemented".into()))
     }
 
     async fn readonly_auth_scheme_get(
@@ -240,7 +250,7 @@ impl<C> Api<C> for Server<C> where C: Has<XSpanIdString> + Send + Sync
         context: &C) -> Result<ReadonlyAuthSchemeGetResponse, ApiError>
     {
         info!("readonly_auth_scheme_get() - X-Span-ID: {:?}", context.get().0.clone());
-        Err(ApiError("Generic failure".into()))
+        Err(ApiError("Api-Error: Operation is NOT implemented".into()))
     }
 
     async fn register_callback_post(
@@ -249,7 +259,7 @@ impl<C> Api<C> for Server<C> where C: Has<XSpanIdString> + Send + Sync
         context: &C) -> Result<RegisterCallbackPostResponse, ApiError>
     {
         info!("register_callback_post(\"{}\") - X-Span-ID: {:?}", url, context.get().0.clone());
-        Err(ApiError("Generic failure".into()))
+        Err(ApiError("Api-Error: Operation is NOT implemented".into()))
     }
 
     async fn required_octet_stream_put(
@@ -258,7 +268,7 @@ impl<C> Api<C> for Server<C> where C: Has<XSpanIdString> + Send + Sync
         context: &C) -> Result<RequiredOctetStreamPutResponse, ApiError>
     {
         info!("required_octet_stream_put({:?}) - X-Span-ID: {:?}", body, context.get().0.clone());
-        Err(ApiError("Generic failure".into()))
+        Err(ApiError("Api-Error: Operation is NOT implemented".into()))
     }
 
     async fn responses_with_headers_get(
@@ -266,7 +276,7 @@ impl<C> Api<C> for Server<C> where C: Has<XSpanIdString> + Send + Sync
         context: &C) -> Result<ResponsesWithHeadersGetResponse, ApiError>
     {
         info!("responses_with_headers_get() - X-Span-ID: {:?}", context.get().0.clone());
-        Err(ApiError("Generic failure".into()))
+        Err(ApiError("Api-Error: Operation is NOT implemented".into()))
     }
 
     async fn rfc7807_get(
@@ -274,7 +284,7 @@ impl<C> Api<C> for Server<C> where C: Has<XSpanIdString> + Send + Sync
         context: &C) -> Result<Rfc7807GetResponse, ApiError>
     {
         info!("rfc7807_get() - X-Span-ID: {:?}", context.get().0.clone());
-        Err(ApiError("Generic failure".into()))
+        Err(ApiError("Api-Error: Operation is NOT implemented".into()))
     }
 
     async fn untyped_property_get(
@@ -283,7 +293,7 @@ impl<C> Api<C> for Server<C> where C: Has<XSpanIdString> + Send + Sync
         context: &C) -> Result<UntypedPropertyGetResponse, ApiError>
     {
         info!("untyped_property_get({:?}) - X-Span-ID: {:?}", object_untyped_props, context.get().0.clone());
-        Err(ApiError("Generic failure".into()))
+        Err(ApiError("Api-Error: Operation is NOT implemented".into()))
     }
 
     async fn uuid_get(
@@ -291,7 +301,7 @@ impl<C> Api<C> for Server<C> where C: Has<XSpanIdString> + Send + Sync
         context: &C) -> Result<UuidGetResponse, ApiError>
     {
         info!("uuid_get() - X-Span-ID: {:?}", context.get().0.clone());
-        Err(ApiError("Generic failure".into()))
+        Err(ApiError("Api-Error: Operation is NOT implemented".into()))
     }
 
     async fn xml_extra_post(
@@ -300,7 +310,7 @@ impl<C> Api<C> for Server<C> where C: Has<XSpanIdString> + Send + Sync
         context: &C) -> Result<XmlExtraPostResponse, ApiError>
     {
         info!("xml_extra_post({:?}) - X-Span-ID: {:?}", duplicate_xml_object, context.get().0.clone());
-        Err(ApiError("Generic failure".into()))
+        Err(ApiError("Api-Error: Operation is NOT implemented".into()))
     }
 
     async fn xml_other_post(
@@ -309,7 +319,7 @@ impl<C> Api<C> for Server<C> where C: Has<XSpanIdString> + Send + Sync
         context: &C) -> Result<XmlOtherPostResponse, ApiError>
     {
         info!("xml_other_post({:?}) - X-Span-ID: {:?}", another_xml_object, context.get().0.clone());
-        Err(ApiError("Generic failure".into()))
+        Err(ApiError("Api-Error: Operation is NOT implemented".into()))
     }
 
     async fn xml_other_put(
@@ -318,7 +328,7 @@ impl<C> Api<C> for Server<C> where C: Has<XSpanIdString> + Send + Sync
         context: &C) -> Result<XmlOtherPutResponse, ApiError>
     {
         info!("xml_other_put({:?}) - X-Span-ID: {:?}", another_xml_array, context.get().0.clone());
-        Err(ApiError("Generic failure".into()))
+        Err(ApiError("Api-Error: Operation is NOT implemented".into()))
     }
 
     /// Post an array
@@ -328,7 +338,7 @@ impl<C> Api<C> for Server<C> where C: Has<XSpanIdString> + Send + Sync
         context: &C) -> Result<XmlPostResponse, ApiError>
     {
         info!("xml_post({:?}) - X-Span-ID: {:?}", xml_array, context.get().0.clone());
-        Err(ApiError("Generic failure".into()))
+        Err(ApiError("Api-Error: Operation is NOT implemented".into()))
     }
 
     async fn xml_put(
@@ -337,7 +347,7 @@ impl<C> Api<C> for Server<C> where C: Has<XSpanIdString> + Send + Sync
         context: &C) -> Result<XmlPutResponse, ApiError>
     {
         info!("xml_put({:?}) - X-Span-ID: {:?}", xml_object, context.get().0.clone());
-        Err(ApiError("Generic failure".into()))
+        Err(ApiError("Api-Error: Operation is NOT implemented".into()))
     }
 
     async fn create_repo(
@@ -346,7 +356,7 @@ impl<C> Api<C> for Server<C> where C: Has<XSpanIdString> + Send + Sync
         context: &C) -> Result<CreateRepoResponse, ApiError>
     {
         info!("create_repo({:?}) - X-Span-ID: {:?}", object_param, context.get().0.clone());
-        Err(ApiError("Generic failure".into()))
+        Err(ApiError("Api-Error: Operation is NOT implemented".into()))
     }
 
     async fn get_repo_info(
@@ -355,7 +365,7 @@ impl<C> Api<C> for Server<C> where C: Has<XSpanIdString> + Send + Sync
         context: &C) -> Result<GetRepoInfoResponse, ApiError>
     {
         info!("get_repo_info(\"{}\") - X-Span-ID: {:?}", repo_id, context.get().0.clone());
-        Err(ApiError("Generic failure".into()))
+        Err(ApiError("Api-Error: Operation is NOT implemented".into()))
     }
 
 }

samples/server/petstore/rust-server/output/openapi-v3/examples/server/server_auth.rs

@@ -0,0 +1,129 @@
+use swagger::{
+    ApiError,
+    auth::{Basic, Bearer},
+    Has, 
+    XSpanIdString};
+use openapi_v3::{AuthenticationApi, Claims};
+use crate::server::Server;
+use jsonwebtoken::{decode, errors as JwtError, decode_header, DecodingKey, TokenData, Validation};
+use swagger::auth::Authorization;
+use log::{error, debug};
+
+// NOTE: Set environment variable RUST_LOG to the name of the executable (or "cargo run") to activate console logging for all loglevels.
+//     See https://docs.rs/env_logger/latest/env_logger/  for more details
+
+
+/// Get a dummy claim with full permissions (all scopes) for testing purposes
+fn full_permission_claim() -> Claims {
+        Claims {
+            sub: "tester@acme.com".to_owned(), 
+            company: "ACME".to_owned(),
+            iss: "mini-bank-IDP".to_owned(),
+            aud: "org.acme.Resource_Server".to_string(),
+            // added a very long expiry time
+            exp: 10000000000,
+            // In this example code all available Scopes are added, so the current Bearer Token gets fully authorization.
+            scopes: [
+                        "test.read",
+                        "test.write",
+            ].join(", ")
+        }
+}
+
+
+
+/// Extract the data from a Bearer token using the provided Key (secret) and using the HS512-algorithm in this example. 
+fn extract_token_data(token: &str, key: &[u8]) -> Result<TokenData<Claims>, JwtError::Error> {
+    
+    // Ensure that you set the correct algorithm and correct key.
+    // See https://github.com/Keats/jsonwebtoken for more information.
+    let header = decode_header(token)?;
+    let validation = {
+        let mut validation = Validation::new(header.alg);
+        validation.set_audience(&["org.acme.Resource_Server"]);
+        validation.validate_exp = true;
+        validation
+    };
+
+    let token_data = decode::<Claims>(
+        &token,
+        &DecodingKey::from_secret(key),
+        &validation,
+    )?;
+
+    Ok(token_data)
+}
+
+/// Build a swagger-Authorization based on the claims (Assuming claims have been extracted from a validated token)
+fn build_authorization(claims: Claims) -> Authorization {
+    let mut scopes = std::collections::BTreeSet::<String>::new();
+    claims
+        .scopes
+        .split(",")
+        .map(|s| s.trim())
+        .for_each(|s| {let _ = scopes.insert(s.to_string()); });
+    let scopes = swagger::auth::Scopes::Some(scopes);
+
+    Authorization{
+        subject: claims.sub, 
+        scopes, 
+        issuer: Some(claims.iss)}
+}
+
+fn get_jwt_error_string(error: JwtError::Error) -> String {
+    match error.kind() {
+        JwtError::ErrorKind::InvalidSignature => "Incorrect token signature".to_owned(),
+        JwtError::ErrorKind::InvalidAlgorithm => "The Algorithm is not correct".to_owned(),
+        JwtError::ErrorKind::ExpiredSignature => "The token has expired".to_owned(),
+        JwtError::ErrorKind::Base64(e) => format!("Base64 decode failed: {e}"),
+        JwtError::ErrorKind::Json(e) => format!("JSON decoding: {e}"),
+        JwtError::ErrorKind::Utf8(e) => format!("Invalid UTF-8: {e}"),
+        _ => error.to_string()
+    }
+}
+
+
+impl<C> AuthenticationApi for Server<C> where C: Has<XSpanIdString> + Send + Sync {
+
+    /// Implementation of the method to map a Bearer-token to an Authorization
+    fn bearer_authorization(&self, bearer: &Bearer) -> Result<Authorization, ApiError> {
+        debug!("\tAuthorizationApi: Received Bearer-token, {bearer:#?}");
+
+        match extract_token_data(&bearer.token, b"secret") {
+            Ok(auth_data) => {
+                debug!("\tUnpack auth_data as: {auth_data:#?}");
+                let authorization = build_authorization(auth_data.claims);
+                Ok(authorization)
+            },
+            Err(err) => {
+                let msg = get_jwt_error_string(err);
+                error!("Failed to unpack Bearer-token: {msg}");
+                Err(ApiError(msg))
+            }
+        }
+    }
+
+    /// Implementation of the method to map an api-key to an Authorization
+    fn apikey_authorization(&self, api_key: &str) -> Result<Authorization, ApiError> {
+        debug!("\tAuthorizationApi: Received api-key, {api_key:#?}");
+
+        // TODO: insert the logic to map received apikey to the set of claims 
+        let claims = full_permission_claim();
+
+        // and build an authorization out of it
+        Ok(build_authorization(claims))
+    }
+    
+    /// Implementation of the method to map a basic authentication (username and password) to an Authorization
+    fn basic_authorization(&self, basic: &Basic) -> Result<Authorization, ApiError> {
+        debug!("\tAuthorizationApi: Received Basic-token, {basic:#?}");
+
+        // TODO: insert the logic to map received apikey to the set of claims 
+        let claims = full_permission_claim();
+
+        // and build an authorization out of it
+        Ok(build_authorization(claims))
+    }
+
+} 
+

samples/server/petstore/rust-server/output/openapi-v3/src/auth.rs

@@ -0,0 +1,62 @@
+use std::collections::BTreeSet;
+use crate::server::Authorization;
+use serde::{Deserialize, Serialize};
+use swagger::{ApiError, auth::{Basic, Bearer}};
+
+#[derive(Debug, Serialize, Deserialize)]
+pub struct Claims {
+    pub sub: String,
+    pub iss: String,
+    pub aud: String,
+    pub company: String,
+    pub exp: u64,
+    pub scopes: String,
+}
+
+
+pub trait AuthenticationApi {
+
+    /// Method should be implemented (see example-code) to map Bearer-token to an Authorization
+    fn bearer_authorization(&self, token: &Bearer) -> Result<Authorization, ApiError>;
+
+    /// Method should be implemented (see example-code) to map ApiKey to an Authorization
+    fn apikey_authorization(&self, token: &str) -> Result<Authorization, ApiError>;
+
+    /// Method should be implemented (see example-code) to map Basic (Username:password) to an Authorization
+    fn basic_authorization(&self, basic: &Basic) -> Result<Authorization, ApiError>;
+} 
+
+// Implement it for AllowAllAuthenticator (dummy is needed, but should not used as we have Bearer authorization)
+use swagger::auth::{AllowAllAuthenticator, RcBound, Scopes};
+
+fn dummy_authorization() -> Authorization {
+    // Is called when MakeAllowAllAuthenticator is added to the stack. This is not needed as we have Bearer-authorization in the example-code.
+    // However, if you want to use it anyway this can not be unimplemented, so dummy implementation added.
+    // unimplemented!()
+    Authorization{
+        subject: "Dummmy".to_owned(),
+        scopes: Scopes::Some(BTreeSet::new()), // create an empty scope, as this should not be used
+        issuer: None
+    }
+}
+
+impl<T, RC> AuthenticationApi for AllowAllAuthenticator<T, RC>
+where
+    RC: RcBound,
+    RC::Result: Send + 'static {
+
+    /// Get method to map Bearer-token to an Authorization
+    fn bearer_authorization(&self, _token: &Bearer) -> Result<Authorization, ApiError> {
+        Ok(dummy_authorization())
+    }
+
+    /// Get method to map api-key to an Authorization
+    fn apikey_authorization(&self, _apikey: &str) -> Result<Authorization, ApiError> {
+        Ok(dummy_authorization())
+    }
+
+    /// Get method to map basic token to an Authorization
+    fn basic_authorization(&self, _basic: &Basic) -> Result<Authorization, ApiError> {
+        Ok(dummy_authorization())
+    }
+}

samples/server/petstore/rust-server/output/openapi-v3/src/client/callbacks.rs

@@ -14,8 +14,7 @@ use swagger::auth::Scopes;
 use url::form_urlencoded;
 
 #[allow(unused_imports)]
-use crate::models;
-use crate::header;
+use crate::{models, header, AuthenticationApi};
 
 pub use crate::context;
 
@@ -52,6 +51,7 @@ mod paths {
 }
 
 
+
 pub struct MakeService<T, C> where
     T: Api<C> + Clone + Send + 'static,
     C: Has<XSpanIdString> + Has<Option<Authorization>> + Send + Sync + 'static
@@ -72,6 +72,7 @@ impl<T, C> MakeService<T, C> where
     }
 }
 
+
 impl<T, C, Target> hyper::service::Service<Target> for MakeService<T, C> where
     T: Api<C> + Clone + Send + 'static,
     C: Has<XSpanIdString> + Has<Option<Authorization>> + Send + Sync + 'static

samples/server/petstore/rust-server/output/openapi-v3/src/context.rs

@@ -8,7 +8,8 @@ use std::marker::PhantomData;
 use std::task::{Poll, Context};
 use swagger::auth::{AuthData, Authorization, Bearer, Scopes};
 use swagger::{EmptyContext, Has, Pop, Push, XSpanIdString};
-use crate::Api;
+use crate::{Api, AuthenticationApi};
+use log::error;
 
 pub struct MakeAddContext<T, A> {
     inner: T,
@@ -89,7 +90,7 @@ impl<T, A, B, C, D, ReqBody> Service<Request<ReqBody>> for AddContext<T, A, B, C
         B: Push<Option<AuthData>, Result=C>,
         C: Push<Option<Authorization>, Result=D>,
         D: Send + 'static,
-        T: Service<(Request<ReqBody>, D)>
+        T: Service<(Request<ReqBody>, D)> + AuthenticationApi
 {
     type Error = T::Error;
     type Future = T::Future;
@@ -108,9 +109,17 @@ impl<T, A, B, C, D, ReqBody> Service<Request<ReqBody>> for AddContext<T, A, B, C
             use swagger::auth::Bearer;
             use std::ops::Deref;
             if let Some(bearer) = swagger::auth::from_headers::<Bearer>(headers) {
+                let authorization = self.inner.bearer_authorization(&bearer);
                 let auth_data = AuthData::Bearer(bearer);
+
                 let context = context.push(Some(auth_data));
-                let context = context.push(None::<Authorization>);
+                let context = match authorization {
+                    Ok(auth) => context.push(Some(auth)),
+                    Err(err) => {
+                        error!("Error during Authorization: {err:?}");
+                        context.push(None::<Authorization>)
+                    }
+                };
 
                 return self.inner.call((request, context))
             }

samples/server/petstore/rust-server/output/openapi-v3/src/lib.rs

@@ -1,19 +1,26 @@
 #![allow(missing_docs, trivial_casts, unused_variables, unused_mut, unused_imports, unused_extern_crates, non_camel_case_types)]
 #![allow(unused_imports, unused_attributes)]
-#![allow(clippy::derive_partial_eq_without_eq, clippy::disallowed_names, clippy::too_many_arguments)]
+#![allow(clippy::derive_partial_eq_without_eq, clippy::disallowed_names)]
 
 use async_trait::async_trait;
 use futures::Stream;
 use std::error::Error;
+use std::collections::BTreeSet;
 use std::task::{Poll, Context};
 use swagger::{ApiError, ContextWrapper};
 use serde::{Serialize, Deserialize};
+use crate::server::Authorization;
+
 
 type ServiceError = Box<dyn Error + Send + Sync + 'static>;
 
 pub const BASE_PATH: &str = "";
 pub const API_VERSION: &str = "1.0.7";
 
+mod auth;
+pub use auth::{AuthenticationApi, Claims};
+
+
 #[derive(Debug, PartialEq, Serialize, Deserialize)]
 #[must_use]
 pub enum AnyOfGetResponse {

samples/server/petstore/rust-server/output/openapi-v3/src/server/mod.rs

@@ -14,8 +14,7 @@ use swagger::auth::Scopes;
 use url::form_urlencoded;
 
 #[allow(unused_imports)]
-use crate::models;
-use crate::header;
+use crate::{models, header, AuthenticationApi};
 
 pub use crate::context;
 
@@ -50,6 +49,8 @@ use crate::{Api,
      GetRepoInfoResponse
 };
 
+mod server_auth;
+
 pub mod callbacks;
 
 mod paths {
@@ -122,6 +123,7 @@ mod paths {
     pub(crate) static ID_XML_OTHER: usize = 23;
 }
 
+
 pub struct MakeService<T, C> where
     T: Api<C> + Clone + Send + 'static,
     C: Has<XSpanIdString> + Has<Option<Authorization>> + Send + Sync + 'static
@@ -142,6 +144,7 @@ impl<T, C> MakeService<T, C> where
     }
 }
 
+
 impl<T, C, Target> hyper::service::Service<Target> for MakeService<T, C> where
     T: Api<C> + Clone + Send + 'static,
     C: Has<XSpanIdString> + Has<Option<Authorization>> + Send + Sync + 'static
@@ -1269,11 +1272,10 @@ impl<T, C> hyper::service::Service<(Request<Body>, C)> for Service<T, C> where
                                 let mut unused_elements = Vec::new();
                                 let param_object_untyped_props: Option<models::ObjectUntypedProps> = if !body.is_empty() {
                                     let deserializer = &mut serde_json::Deserializer::from_slice(&body);
-                                    let handle_unknown_field = |path: serde_ignored::Path<'_>| {
+                                    match serde_ignored::deserialize(deserializer, |path| {
                                             warn!("Ignoring unknown field in body: {}", path);
                                             unused_elements.push(path.to_string());
-                                    };
-                                    match serde_ignored::deserialize(deserializer, handle_unknown_field) {
+                                    }) {
                                         Ok(param_object_untyped_props) => param_object_untyped_props,
                                         Err(_) => None,
                                     }
@@ -1369,11 +1371,10 @@ impl<T, C> hyper::service::Service<(Request<Body>, C)> for Service<T, C> where
                                 let mut unused_elements = Vec::new();
                                 let param_duplicate_xml_object: Option<models::DuplicateXmlObject> = if !body.is_empty() {
                                     let deserializer = &mut serde_xml_rs::de::Deserializer::new_from_reader(&*body);
-                                    let handle_unknown_field = |path: serde_ignored::Path<'_>| {
+                                    match serde_ignored::deserialize(deserializer, |path| {
                                             warn!("Ignoring unknown field in body: {}", path);
                                             unused_elements.push(path.to_string());
-                                    };
-                                    match serde_ignored::deserialize(deserializer, handle_unknown_field) {
+                                    }) {
                                         Ok(param_duplicate_xml_object) => param_duplicate_xml_object,
                                         Err(_) => None,
                                     }
@@ -1437,11 +1438,10 @@ impl<T, C> hyper::service::Service<(Request<Body>, C)> for Service<T, C> where
                                 let mut unused_elements = Vec::new();
                                 let param_another_xml_object: Option<models::AnotherXmlObject> = if !body.is_empty() {
                                     let deserializer = &mut serde_xml_rs::de::Deserializer::new_from_reader(&*body);
-                                    let handle_unknown_field = |path: serde_ignored::Path<'_>| {
+                                    match serde_ignored::deserialize(deserializer, |path| {
                                             warn!("Ignoring unknown field in body: {}", path);
                                             unused_elements.push(path.to_string());
-                                    };
-                                    match serde_ignored::deserialize(deserializer, handle_unknown_field) {
+                                    }) {
                                         Ok(param_another_xml_object) => param_another_xml_object,
                                         Err(_) => None,
                                     }
@@ -1516,11 +1516,10 @@ impl<T, C> hyper::service::Service<(Request<Body>, C)> for Service<T, C> where
                                 let mut unused_elements = Vec::new();
                                 let param_another_xml_array: Option<models::AnotherXmlArray> = if !body.is_empty() {
                                     let deserializer = &mut serde_xml_rs::de::Deserializer::new_from_reader(&*body);
-                                    let handle_unknown_field = |path: serde_ignored::Path<'_>| {
+                                    match serde_ignored::deserialize(deserializer, |path| {
                                             warn!("Ignoring unknown field in body: {}", path);
                                             unused_elements.push(path.to_string());
-                                    };
-                                    match serde_ignored::deserialize(deserializer, handle_unknown_field) {
+                                    }) {
                                         Ok(param_another_xml_array) => param_another_xml_array,
                                         Err(_) => None,
                                     }
@@ -1584,11 +1583,10 @@ impl<T, C> hyper::service::Service<(Request<Body>, C)> for Service<T, C> where
                                 let mut unused_elements = Vec::new();
                                 let param_xml_array: Option<models::XmlArray> = if !body.is_empty() {
                                     let deserializer = &mut serde_xml_rs::de::Deserializer::new_from_reader(&*body);
-                                    let handle_unknown_field = |path: serde_ignored::Path<'_>| {
+                                    match serde_ignored::deserialize(deserializer, |path| {
                                             warn!("Ignoring unknown field in body: {}", path);
                                             unused_elements.push(path.to_string());
-                                    };
-                                    match serde_ignored::deserialize(deserializer, handle_unknown_field) {
+                                    }) {
                                         Ok(param_xml_array) => param_xml_array,
                                         Err(_) => None,
                                     }
@@ -1652,11 +1650,10 @@ impl<T, C> hyper::service::Service<(Request<Body>, C)> for Service<T, C> where
                                 let mut unused_elements = Vec::new();
                                 let param_xml_object: Option<models::XmlObject> = if !body.is_empty() {
                                     let deserializer = &mut serde_xml_rs::de::Deserializer::new_from_reader(&*body);
-                                    let handle_unknown_field = |path: serde_ignored::Path<'_>| {
+                                    match serde_ignored::deserialize(deserializer, |path| {
                                             warn!("Ignoring unknown field in body: {}", path);
                                             unused_elements.push(path.to_string());
-                                    };
-                                    match serde_ignored::deserialize(deserializer, handle_unknown_field) {
+                                    }) {
                                         Ok(param_xml_object) => param_xml_object,
                                         Err(_) => None,
                                     }
@@ -1720,11 +1717,10 @@ impl<T, C> hyper::service::Service<(Request<Body>, C)> for Service<T, C> where
                                 let mut unused_elements = Vec::new();
                                 let param_object_param: Option<models::ObjectParam> = if !body.is_empty() {
                                     let deserializer = &mut serde_json::Deserializer::from_slice(&body);
-                                    let handle_unknown_field = |path: serde_ignored::Path<'_>| {
+                                    match serde_ignored::deserialize(deserializer, |path| {
                                             warn!("Ignoring unknown field in body: {}", path);
                                             unused_elements.push(path.to_string());
-                                    };
-                                    match serde_ignored::deserialize(deserializer, handle_unknown_field) {
+                                    }) {
                                         Ok(param_object_param) => param_object_param,
                                         Err(e) => return Ok(Response::builder()
                                                         .status(StatusCode::BAD_REQUEST)

samples/server/petstore/rust-server/output/openapi-v3/src/server/server_auth.rs

@@ -0,0 +1,28 @@
+use super::Service;
+use crate::{Api, AuthenticationApi};
+use swagger::{
+    ApiError,
+    Authorization, 
+    auth::{Basic, Bearer}, 
+    Has, 
+    XSpanIdString};
+
+impl<T,C> AuthenticationApi for Service<T, C> where
+T: Api<C> + Clone + Send + 'static + AuthenticationApi,
+C: Has<XSpanIdString> + Has<Option<Authorization>> + Send + Sync + 'static {
+
+    /// Passthrough of the task to the api-implementation
+    fn bearer_authorization(&self, token: &Bearer) -> Result<Authorization, ApiError> {
+        self.api_impl.bearer_authorization(token)
+    }
+
+    /// Passthrough of the task to the api-implementation
+    fn apikey_authorization(&self, token: &str) -> Result<Authorization, ApiError> {
+        self.api_impl.apikey_authorization(token)
+    }
+
+    /// Passthrough of the task to the api-implementation
+    fn basic_authorization(&self, basic: &Basic) -> Result<Authorization, ApiError> {
+        self.api_impl.basic_authorization(basic)
+    }
+}

samples/server/petstore/rust-server/output/ops-v3/.openapi-generator/FILES

@@ -5,14 +5,18 @@ README.md
 api/openapi.yaml
 docs/default_api.md
 examples/ca.pem
+examples/client/client_auth.rs
 examples/client/main.rs
 examples/server-chain.pem
 examples/server-key.pem
 examples/server/main.rs
 examples/server/server.rs
+examples/server/server_auth.rs
+src/auth.rs
 src/client/mod.rs
 src/context.rs
 src/header.rs
 src/lib.rs
 src/models.rs
 src/server/mod.rs
+src/server/server_auth.rs

samples/server/petstore/rust-server/output/ops-v3/Cargo.toml

@@ -5,7 +5,7 @@ authors = ["OpenAPI Generator team and contributors"]
 description = "No description provided (generated by Openapi Generator https://github.com/openapitools/openapi-generator)"
 # Override this license by providing a License Object in the OpenAPI.
 license = "Unlicense"
-edition = "2021"
+edition = "2018"
 
 [features]
 default = ["client", "server"]
@@ -59,6 +59,9 @@ frunk_core = { version = "0.3.0", optional = true }
 frunk-enum-derive = { version = "0.2.0", optional = true }
 frunk-enum-core = { version = "0.2.0", optional = true }
 
+# Bearer authentication
+jsonwebtoken = { version = "9.3.0", optional = false }
+
 [dev-dependencies]
 clap = "2.25"
 env_logger = "0.7"

samples/server/petstore/rust-server/output/ops-v3/examples/client/client_auth.rs

@@ -0,0 +1,17 @@
+use ops_v3::Claims;
+use jsonwebtoken::{encode, errors::Error as JwtError, Algorithm, EncodingKey, Header};
+use log::debug;
+
+/// build an encrypted token with the provided claims.
+pub fn build_token(my_claims: Claims, key: &[u8]) -> Result<String, JwtError> {
+
+    // Ensure that you set the correct algorithm and correct key.
+    // See https://github.com/Keats/jsonwebtoken for more information.
+    let header =
+        Header { kid: Some("signing_key".to_owned()), alg: Algorithm::HS512, ..Default::default() };
+
+    let token = encode(&header, &my_claims, &EncodingKey::from_secret(key))?;
+    debug!("Derived token: {:?}", token);
+
+    Ok(token)
+}

samples/server/petstore/rust-server/output/ops-v3/examples/client/main.rs

@@ -4,7 +4,7 @@
 #[allow(unused_imports)]
 use futures::{future, Stream, stream};
 #[allow(unused_imports)]
-use ops_v3::{Api, ApiNoContext, Client, ContextWrapperExt, models,
+use ops_v3::{Api, ApiNoContext, Claims, Client, ContextWrapperExt, models,
                       Op10GetResponse,
                       Op11GetResponse,
                       Op12GetResponse,
@@ -45,6 +45,9 @@ use ops_v3::{Api, ApiNoContext, Client, ContextWrapperExt, models,
                      };
 use clap::{App, Arg};
 
+// NOTE: Set environment variable RUST_LOG to the name of the executable (or "cargo run") to activate console logging for all loglevels.
+//     See https://docs.rs/env_logger/latest/env_logger/  for more details
+
 #[allow(unused_imports)]
 use log::info;
 
@@ -54,6 +57,10 @@ use swagger::{AuthData, ContextBuilder, EmptyContext, Has, Push, XSpanIdString};
 
 type ClientContext = swagger::make_context_ty!(ContextBuilder, EmptyContext, Option<AuthData>, XSpanIdString);
 
+mod client_auth;
+use client_auth::build_token;
+
+
 // rt may be unused if there are no examples
 #[allow(unused_mut)]
 fn main() {
@@ -118,6 +125,32 @@ fn main() {
             .help("Port to contact"))
         .get_matches();
 
+    // Create Bearer-token with a fixed key (secret) for test purposes.
+    // In a real (production) system this Bearer token should be obtained via an external Identity/Authentication-server
+    // Ensure that you set the correct algorithm and encodingkey that matches what is used on the server side.
+    // See https://github.com/Keats/jsonwebtoken for more information
+
+    let auth_token = build_token(
+            Claims {
+                sub: "tester@acme.com".to_owned(), 
+                company: "ACME".to_owned(),
+                iss: "my_identity_provider".to_owned(),
+                // added a very long expiry time
+                aud: "org.acme.Resource_Server".to_string(),
+                exp: 10000000000,
+                // In this example code all available Scopes are added, so the current Bearer Token gets fully authorization.
+                scopes: [
+                ].join(", ")
+            }, 
+            b"secret").unwrap();
+
+    let auth_data = if !auth_token.is_empty() {
+        Some(AuthData::Bearer(swagger::auth::Bearer { token: auth_token}))
+    } else {
+        // No Bearer-token available, so return None
+        None
+    };
+
     let is_https = matches.is_present("https");
     let base_url = format!("{}://{}:{}",
         if is_https { "https" } else { "http" },
@@ -125,7 +158,7 @@ fn main() {
         matches.value_of("port").unwrap());
 
     let context: ClientContext =
-        swagger::make_context!(ContextBuilder, EmptyContext, None as Option<AuthData>, XSpanIdString::default());
+        swagger::make_context!(ContextBuilder, EmptyContext, auth_data, XSpanIdString::default());
 
     let mut client : Box<dyn ApiNoContext<ClientContext>> = if matches.is_present("https") {
         // Using Simple HTTPS

samples/server/petstore/rust-server/output/ops-v3/examples/server/main.rs

@@ -1,10 +1,13 @@
 //! Main binary entry point for ops_v3 implementation.
+// This is the amended version that adds Authorization via Inversion of Control.
 
 #![allow(missing_docs)]
 
+
 use clap::{App, Arg};
 
 mod server;
+mod server_auth;
 
 
 /// Create custom server, wire it to the autogenerated router,

samples/server/petstore/rust-server/output/ops-v3/examples/server/server.rs

@@ -30,7 +30,9 @@ pub async fn create(addr: &str, https: bool) {
 
     let service = MakeService::new(server);
 
-    let service = MakeAllowAllAuthenticator::new(service, "cosmo");
+    // This pushes a fourth layer of the middleware-stack even though Swagger assumes only three levels.
+    // This fourth layer creates an accept-all policy, hower the example-code already acchieves the same via a Bearer-token with full permissions, so next line is not needed (anymore).  
+    // let service = MakeAllowAllAuthenticator::new(service, "cosmo");
 
     #[allow(unused_mut)]
     let mut service =
@@ -56,6 +58,7 @@ pub async fn create(addr: &str, https: bool) {
             let tls_acceptor = ssl.build();
             let tcp_listener = TcpListener::bind(&addr).await.unwrap();
 
+            info!("Starting a server (with https)");
             loop {
                 if let Ok((tcp, _)) = tcp_listener.accept().await {
                     let ssl = Ssl::new(tls_acceptor.context()).unwrap();
@@ -75,6 +78,7 @@ pub async fn create(addr: &str, https: bool) {
             }
         }
     } else {
+        info!("Starting a server (over http, so no TLS)");
         // Using HTTP
         hyper::server::Server::bind(&addr).serve(service).await.unwrap()
     }
@@ -92,6 +96,12 @@ impl<C> Server<C> {
 }
 
 
+use jsonwebtoken::{decode, encode, errors::Error as JwtError, Algorithm, DecodingKey, EncodingKey, Header, TokenData, Validation};
+use serde::{Deserialize, Serialize};
+use swagger::auth::Authorization;
+use crate::server_auth;
+
+
 use ops_v3::{
     Api,
     Op10GetResponse,
@@ -144,7 +154,7 @@ impl<C> Api<C> for Server<C> where C: Has<XSpanIdString> + Send + Sync
         context: &C) -> Result<Op10GetResponse, ApiError>
     {
         info!("op10_get() - X-Span-ID: {:?}", context.get().0.clone());
-        Err(ApiError("Generic failure".into()))
+        Err(ApiError("Api-Error: Operation is NOT implemented".into()))
     }
 
     async fn op11_get(
@@ -152,7 +162,7 @@ impl<C> Api<C> for Server<C> where C: Has<XSpanIdString> + Send + Sync
         context: &C) -> Result<Op11GetResponse, ApiError>
     {
         info!("op11_get() - X-Span-ID: {:?}", context.get().0.clone());
-        Err(ApiError("Generic failure".into()))
+        Err(ApiError("Api-Error: Operation is NOT implemented".into()))
     }
 
     async fn op12_get(
@@ -160,7 +170,7 @@ impl<C> Api<C> for Server<C> where C: Has<XSpanIdString> + Send + Sync
         context: &C) -> Result<Op12GetResponse, ApiError>
     {
         info!("op12_get() - X-Span-ID: {:?}", context.get().0.clone());
-        Err(ApiError("Generic failure".into()))
+        Err(ApiError("Api-Error: Operation is NOT implemented".into()))
     }
 
     async fn op13_get(
@@ -168,7 +178,7 @@ impl<C> Api<C> for Server<C> where C: Has<XSpanIdString> + Send + Sync
         context: &C) -> Result<Op13GetResponse, ApiError>
     {
         info!("op13_get() - X-Span-ID: {:?}", context.get().0.clone());
-        Err(ApiError("Generic failure".into()))
+        Err(ApiError("Api-Error: Operation is NOT implemented".into()))
     }
 
     async fn op14_get(
@@ -176,7 +186,7 @@ impl<C> Api<C> for Server<C> where C: Has<XSpanIdString> + Send + Sync
         context: &C) -> Result<Op14GetResponse, ApiError>
     {
         info!("op14_get() - X-Span-ID: {:?}", context.get().0.clone());
-        Err(ApiError("Generic failure".into()))
+        Err(ApiError("Api-Error: Operation is NOT implemented".into()))
     }
 
     async fn op15_get(
@@ -184,7 +194,7 @@ impl<C> Api<C> for Server<C> where C: Has<XSpanIdString> + Send + Sync
         context: &C) -> Result<Op15GetResponse, ApiError>
     {
         info!("op15_get() - X-Span-ID: {:?}", context.get().0.clone());
-        Err(ApiError("Generic failure".into()))
+        Err(ApiError("Api-Error: Operation is NOT implemented".into()))
     }
 
     async fn op16_get(
@@ -192,7 +202,7 @@ impl<C> Api<C> for Server<C> where C: Has<XSpanIdString> + Send + Sync
         context: &C) -> Result<Op16GetResponse, ApiError>
     {
         info!("op16_get() - X-Span-ID: {:?}", context.get().0.clone());
-        Err(ApiError("Generic failure".into()))
+        Err(ApiError("Api-Error: Operation is NOT implemented".into()))
     }
 
     async fn op17_get(
@@ -200,7 +210,7 @@ impl<C> Api<C> for Server<C> where C: Has<XSpanIdString> + Send + Sync
         context: &C) -> Result<Op17GetResponse, ApiError>
     {
         info!("op17_get() - X-Span-ID: {:?}", context.get().0.clone());
-        Err(ApiError("Generic failure".into()))
+        Err(ApiError("Api-Error: Operation is NOT implemented".into()))
     }
 
     async fn op18_get(
@@ -208,7 +218,7 @@ impl<C> Api<C> for Server<C> where C: Has<XSpanIdString> + Send + Sync
         context: &C) -> Result<Op18GetResponse, ApiError>
     {
         info!("op18_get() - X-Span-ID: {:?}", context.get().0.clone());
-        Err(ApiError("Generic failure".into()))
+        Err(ApiError("Api-Error: Operation is NOT implemented".into()))
     }
 
     async fn op19_get(
@@ -216,7 +226,7 @@ impl<C> Api<C> for Server<C> where C: Has<XSpanIdString> + Send + Sync
         context: &C) -> Result<Op19GetResponse, ApiError>
     {
         info!("op19_get() - X-Span-ID: {:?}", context.get().0.clone());
-        Err(ApiError("Generic failure".into()))
+        Err(ApiError("Api-Error: Operation is NOT implemented".into()))
     }
 
     async fn op1_get(
@@ -224,7 +234,7 @@ impl<C> Api<C> for Server<C> where C: Has<XSpanIdString> + Send + Sync
         context: &C) -> Result<Op1GetResponse, ApiError>
     {
         info!("op1_get() - X-Span-ID: {:?}", context.get().0.clone());
-        Err(ApiError("Generic failure".into()))
+        Err(ApiError("Api-Error: Operation is NOT implemented".into()))
     }
 
     async fn op20_get(
@@ -232,7 +242,7 @@ impl<C> Api<C> for Server<C> where C: Has<XSpanIdString> + Send + Sync
         context: &C) -> Result<Op20GetResponse, ApiError>
     {
         info!("op20_get() - X-Span-ID: {:?}", context.get().0.clone());
-        Err(ApiError("Generic failure".into()))
+        Err(ApiError("Api-Error: Operation is NOT implemented".into()))
     }
 
     async fn op21_get(
@@ -240,7 +250,7 @@ impl<C> Api<C> for Server<C> where C: Has<XSpanIdString> + Send + Sync
         context: &C) -> Result<Op21GetResponse, ApiError>
     {
         info!("op21_get() - X-Span-ID: {:?}", context.get().0.clone());
-        Err(ApiError("Generic failure".into()))
+        Err(ApiError("Api-Error: Operation is NOT implemented".into()))
     }
 
     async fn op22_get(
@@ -248,7 +258,7 @@ impl<C> Api<C> for Server<C> where C: Has<XSpanIdString> + Send + Sync
         context: &C) -> Result<Op22GetResponse, ApiError>
     {
         info!("op22_get() - X-Span-ID: {:?}", context.get().0.clone());
-        Err(ApiError("Generic failure".into()))
+        Err(ApiError("Api-Error: Operation is NOT implemented".into()))
     }
 
     async fn op23_get(
@@ -256,7 +266,7 @@ impl<C> Api<C> for Server<C> where C: Has<XSpanIdString> + Send + Sync
         context: &C) -> Result<Op23GetResponse, ApiError>
     {
         info!("op23_get() - X-Span-ID: {:?}", context.get().0.clone());
-        Err(ApiError("Generic failure".into()))
+        Err(ApiError("Api-Error: Operation is NOT implemented".into()))
     }
 
     async fn op24_get(
@@ -264,7 +274,7 @@ impl<C> Api<C> for Server<C> where C: Has<XSpanIdString> + Send + Sync
         context: &C) -> Result<Op24GetResponse, ApiError>
     {
         info!("op24_get() - X-Span-ID: {:?}", context.get().0.clone());
-        Err(ApiError("Generic failure".into()))
+        Err(ApiError("Api-Error: Operation is NOT implemented".into()))
     }
 
     async fn op25_get(
@@ -272,7 +282,7 @@ impl<C> Api<C> for Server<C> where C: Has<XSpanIdString> + Send + Sync
         context: &C) -> Result<Op25GetResponse, ApiError>
     {
         info!("op25_get() - X-Span-ID: {:?}", context.get().0.clone());
-        Err(ApiError("Generic failure".into()))
+        Err(ApiError("Api-Error: Operation is NOT implemented".into()))
     }
 
     async fn op26_get(
@@ -280,7 +290,7 @@ impl<C> Api<C> for Server<C> where C: Has<XSpanIdString> + Send + Sync
         context: &C) -> Result<Op26GetResponse, ApiError>
     {
         info!("op26_get() - X-Span-ID: {:?}", context.get().0.clone());
-        Err(ApiError("Generic failure".into()))
+        Err(ApiError("Api-Error: Operation is NOT implemented".into()))
     }
 
     async fn op27_get(
@@ -288,7 +298,7 @@ impl<C> Api<C> for Server<C> where C: Has<XSpanIdString> + Send + Sync
         context: &C) -> Result<Op27GetResponse, ApiError>
     {
         info!("op27_get() - X-Span-ID: {:?}", context.get().0.clone());
-        Err(ApiError("Generic failure".into()))
+        Err(ApiError("Api-Error: Operation is NOT implemented".into()))
     }
 
     async fn op28_get(
@@ -296,7 +306,7 @@ impl<C> Api<C> for Server<C> where C: Has<XSpanIdString> + Send + Sync
         context: &C) -> Result<Op28GetResponse, ApiError>
     {
         info!("op28_get() - X-Span-ID: {:?}", context.get().0.clone());
-        Err(ApiError("Generic failure".into()))
+        Err(ApiError("Api-Error: Operation is NOT implemented".into()))
     }
 
     async fn op29_get(
@@ -304,7 +314,7 @@ impl<C> Api<C> for Server<C> where C: Has<XSpanIdString> + Send + Sync
         context: &C) -> Result<Op29GetResponse, ApiError>
     {
         info!("op29_get() - X-Span-ID: {:?}", context.get().0.clone());
-        Err(ApiError("Generic failure".into()))
+        Err(ApiError("Api-Error: Operation is NOT implemented".into()))
     }
 
     async fn op2_get(
@@ -312,7 +322,7 @@ impl<C> Api<C> for Server<C> where C: Has<XSpanIdString> + Send + Sync
         context: &C) -> Result<Op2GetResponse, ApiError>
     {
         info!("op2_get() - X-Span-ID: {:?}", context.get().0.clone());
-        Err(ApiError("Generic failure".into()))
+        Err(ApiError("Api-Error: Operation is NOT implemented".into()))
     }
 
     async fn op30_get(
@@ -320,7 +330,7 @@ impl<C> Api<C> for Server<C> where C: Has<XSpanIdString> + Send + Sync
         context: &C) -> Result<Op30GetResponse, ApiError>
     {
         info!("op30_get() - X-Span-ID: {:?}", context.get().0.clone());
-        Err(ApiError("Generic failure".into()))
+        Err(ApiError("Api-Error: Operation is NOT implemented".into()))
     }
 
     async fn op31_get(
@@ -328,7 +338,7 @@ impl<C> Api<C> for Server<C> where C: Has<XSpanIdString> + Send + Sync
         context: &C) -> Result<Op31GetResponse, ApiError>
     {
         info!("op31_get() - X-Span-ID: {:?}", context.get().0.clone());
-        Err(ApiError("Generic failure".into()))
+        Err(ApiError("Api-Error: Operation is NOT implemented".into()))
     }
 
     async fn op32_get(
@@ -336,7 +346,7 @@ impl<C> Api<C> for Server<C> where C: Has<XSpanIdString> + Send + Sync
         context: &C) -> Result<Op32GetResponse, ApiError>
     {
         info!("op32_get() - X-Span-ID: {:?}", context.get().0.clone());
-        Err(ApiError("Generic failure".into()))
+        Err(ApiError("Api-Error: Operation is NOT implemented".into()))
     }
 
     async fn op33_get(
@@ -344,7 +354,7 @@ impl<C> Api<C> for Server<C> where C: Has<XSpanIdString> + Send + Sync
         context: &C) -> Result<Op33GetResponse, ApiError>
     {
         info!("op33_get() - X-Span-ID: {:?}", context.get().0.clone());
-        Err(ApiError("Generic failure".into()))
+        Err(ApiError("Api-Error: Operation is NOT implemented".into()))
     }
 
     async fn op34_get(
@@ -352,7 +362,7 @@ impl<C> Api<C> for Server<C> where C: Has<XSpanIdString> + Send + Sync
         context: &C) -> Result<Op34GetResponse, ApiError>
     {
         info!("op34_get() - X-Span-ID: {:?}", context.get().0.clone());
-        Err(ApiError("Generic failure".into()))
+        Err(ApiError("Api-Error: Operation is NOT implemented".into()))
     }
 
     async fn op35_get(
@@ -360,7 +370,7 @@ impl<C> Api<C> for Server<C> where C: Has<XSpanIdString> + Send + Sync
         context: &C) -> Result<Op35GetResponse, ApiError>
     {
         info!("op35_get() - X-Span-ID: {:?}", context.get().0.clone());
-        Err(ApiError("Generic failure".into()))
+        Err(ApiError("Api-Error: Operation is NOT implemented".into()))
     }
 
     async fn op36_get(
@@ -368,7 +378,7 @@ impl<C> Api<C> for Server<C> where C: Has<XSpanIdString> + Send + Sync
         context: &C) -> Result<Op36GetResponse, ApiError>
     {
         info!("op36_get() - X-Span-ID: {:?}", context.get().0.clone());
-        Err(ApiError("Generic failure".into()))
+        Err(ApiError("Api-Error: Operation is NOT implemented".into()))
     }
 
     async fn op37_get(
@@ -376,7 +386,7 @@ impl<C> Api<C> for Server<C> where C: Has<XSpanIdString> + Send + Sync
         context: &C) -> Result<Op37GetResponse, ApiError>
     {
         info!("op37_get() - X-Span-ID: {:?}", context.get().0.clone());
-        Err(ApiError("Generic failure".into()))
+        Err(ApiError("Api-Error: Operation is NOT implemented".into()))
     }
 
     async fn op3_get(
@@ -384,7 +394,7 @@ impl<C> Api<C> for Server<C> where C: Has<XSpanIdString> + Send + Sync
         context: &C) -> Result<Op3GetResponse, ApiError>
     {
         info!("op3_get() - X-Span-ID: {:?}", context.get().0.clone());
-        Err(ApiError("Generic failure".into()))
+        Err(ApiError("Api-Error: Operation is NOT implemented".into()))
     }
 
     async fn op4_get(
@@ -392,7 +402,7 @@ impl<C> Api<C> for Server<C> where C: Has<XSpanIdString> + Send + Sync
         context: &C) -> Result<Op4GetResponse, ApiError>
     {
         info!("op4_get() - X-Span-ID: {:?}", context.get().0.clone());
-        Err(ApiError("Generic failure".into()))
+        Err(ApiError("Api-Error: Operation is NOT implemented".into()))
     }
 
     async fn op5_get(
@@ -400,7 +410,7 @@ impl<C> Api<C> for Server<C> where C: Has<XSpanIdString> + Send + Sync
         context: &C) -> Result<Op5GetResponse, ApiError>
     {
         info!("op5_get() - X-Span-ID: {:?}", context.get().0.clone());
-        Err(ApiError("Generic failure".into()))
+        Err(ApiError("Api-Error: Operation is NOT implemented".into()))
     }
 
     async fn op6_get(
@@ -408,7 +418,7 @@ impl<C> Api<C> for Server<C> where C: Has<XSpanIdString> + Send + Sync
         context: &C) -> Result<Op6GetResponse, ApiError>
     {
         info!("op6_get() - X-Span-ID: {:?}", context.get().0.clone());
-        Err(ApiError("Generic failure".into()))
+        Err(ApiError("Api-Error: Operation is NOT implemented".into()))
     }
 
     async fn op7_get(
@@ -416,7 +426,7 @@ impl<C> Api<C> for Server<C> where C: Has<XSpanIdString> + Send + Sync
         context: &C) -> Result<Op7GetResponse, ApiError>
     {
         info!("op7_get() - X-Span-ID: {:?}", context.get().0.clone());
-        Err(ApiError("Generic failure".into()))
+        Err(ApiError("Api-Error: Operation is NOT implemented".into()))
     }
 
     async fn op8_get(
@@ -424,7 +434,7 @@ impl<C> Api<C> for Server<C> where C: Has<XSpanIdString> + Send + Sync
         context: &C) -> Result<Op8GetResponse, ApiError>
     {
         info!("op8_get() - X-Span-ID: {:?}", context.get().0.clone());
-        Err(ApiError("Generic failure".into()))
+        Err(ApiError("Api-Error: Operation is NOT implemented".into()))
     }
 
     async fn op9_get(
@@ -432,7 +442,7 @@ impl<C> Api<C> for Server<C> where C: Has<XSpanIdString> + Send + Sync
         context: &C) -> Result<Op9GetResponse, ApiError>
     {
         info!("op9_get() - X-Span-ID: {:?}", context.get().0.clone());
-        Err(ApiError("Generic failure".into()))
+        Err(ApiError("Api-Error: Operation is NOT implemented".into()))
     }
 
 }

samples/server/petstore/rust-server/output/ops-v3/examples/server/server_auth.rs

@@ -0,0 +1,127 @@
+use swagger::{
+    ApiError,
+    auth::{Basic, Bearer},
+    Has, 
+    XSpanIdString};
+use ops_v3::{AuthenticationApi, Claims};
+use crate::server::Server;
+use jsonwebtoken::{decode, errors as JwtError, decode_header, DecodingKey, TokenData, Validation};
+use swagger::auth::Authorization;
+use log::{error, debug};
+
+// NOTE: Set environment variable RUST_LOG to the name of the executable (or "cargo run") to activate console logging for all loglevels.
+//     See https://docs.rs/env_logger/latest/env_logger/  for more details
+
+
+/// Get a dummy claim with full permissions (all scopes) for testing purposes
+fn full_permission_claim() -> Claims {
+        Claims {
+            sub: "tester@acme.com".to_owned(), 
+            company: "ACME".to_owned(),
+            iss: "mini-bank-IDP".to_owned(),
+            aud: "org.acme.Resource_Server".to_string(),
+            // added a very long expiry time
+            exp: 10000000000,
+            // In this example code all available Scopes are added, so the current Bearer Token gets fully authorization.
+            scopes: [
+            ].join(", ")
+        }
+}
+
+
+
+/// Extract the data from a Bearer token using the provided Key (secret) and using the HS512-algorithm in this example. 
+fn extract_token_data(token: &str, key: &[u8]) -> Result<TokenData<Claims>, JwtError::Error> {
+    
+    // Ensure that you set the correct algorithm and correct key.
+    // See https://github.com/Keats/jsonwebtoken for more information.
+    let header = decode_header(token)?;
+    let validation = {
+        let mut validation = Validation::new(header.alg);
+        validation.set_audience(&["org.acme.Resource_Server"]);
+        validation.validate_exp = true;
+        validation
+    };
+
+    let token_data = decode::<Claims>(
+        &token,
+        &DecodingKey::from_secret(key),
+        &validation,
+    )?;
+
+    Ok(token_data)
+}
+
+/// Build a swagger-Authorization based on the claims (Assuming claims have been extracted from a validated token)
+fn build_authorization(claims: Claims) -> Authorization {
+    let mut scopes = std::collections::BTreeSet::<String>::new();
+    claims
+        .scopes
+        .split(",")
+        .map(|s| s.trim())
+        .for_each(|s| {let _ = scopes.insert(s.to_string()); });
+    let scopes = swagger::auth::Scopes::Some(scopes);
+
+    Authorization{
+        subject: claims.sub, 
+        scopes, 
+        issuer: Some(claims.iss)}
+}
+
+fn get_jwt_error_string(error: JwtError::Error) -> String {
+    match error.kind() {
+        JwtError::ErrorKind::InvalidSignature => "Incorrect token signature".to_owned(),
+        JwtError::ErrorKind::InvalidAlgorithm => "The Algorithm is not correct".to_owned(),
+        JwtError::ErrorKind::ExpiredSignature => "The token has expired".to_owned(),
+        JwtError::ErrorKind::Base64(e) => format!("Base64 decode failed: {e}"),
+        JwtError::ErrorKind::Json(e) => format!("JSON decoding: {e}"),
+        JwtError::ErrorKind::Utf8(e) => format!("Invalid UTF-8: {e}"),
+        _ => error.to_string()
+    }
+}
+
+
+impl<C> AuthenticationApi for Server<C> where C: Has<XSpanIdString> + Send + Sync {
+
+    /// Implementation of the method to map a Bearer-token to an Authorization
+    fn bearer_authorization(&self, bearer: &Bearer) -> Result<Authorization, ApiError> {
+        debug!("\tAuthorizationApi: Received Bearer-token, {bearer:#?}");
+
+        match extract_token_data(&bearer.token, b"secret") {
+            Ok(auth_data) => {
+                debug!("\tUnpack auth_data as: {auth_data:#?}");
+                let authorization = build_authorization(auth_data.claims);
+                Ok(authorization)
+            },
+            Err(err) => {
+                let msg = get_jwt_error_string(err);
+                error!("Failed to unpack Bearer-token: {msg}");
+                Err(ApiError(msg))
+            }
+        }
+    }
+
+    /// Implementation of the method to map an api-key to an Authorization
+    fn apikey_authorization(&self, api_key: &str) -> Result<Authorization, ApiError> {
+        debug!("\tAuthorizationApi: Received api-key, {api_key:#?}");
+
+        // TODO: insert the logic to map received apikey to the set of claims 
+        let claims = full_permission_claim();
+
+        // and build an authorization out of it
+        Ok(build_authorization(claims))
+    }
+    
+    /// Implementation of the method to map a basic authentication (username and password) to an Authorization
+    fn basic_authorization(&self, basic: &Basic) -> Result<Authorization, ApiError> {
+        debug!("\tAuthorizationApi: Received Basic-token, {basic:#?}");
+
+        // TODO: insert the logic to map received apikey to the set of claims 
+        let claims = full_permission_claim();
+
+        // and build an authorization out of it
+        Ok(build_authorization(claims))
+    }
+
+} 
+

samples/server/petstore/rust-server/output/ops-v3/src/auth.rs

@@ -0,0 +1,62 @@
+use std::collections::BTreeSet;
+use crate::server::Authorization;
+use serde::{Deserialize, Serialize};
+use swagger::{ApiError, auth::{Basic, Bearer}};
+
+#[derive(Debug, Serialize, Deserialize)]
+pub struct Claims {
+    pub sub: String,
+    pub iss: String,
+    pub aud: String,
+    pub company: String,
+    pub exp: u64,
+    pub scopes: String,
+}
+
+
+pub trait AuthenticationApi {
+
+    /// Method should be implemented (see example-code) to map Bearer-token to an Authorization
+    fn bearer_authorization(&self, token: &Bearer) -> Result<Authorization, ApiError>;
+
+    /// Method should be implemented (see example-code) to map ApiKey to an Authorization
+    fn apikey_authorization(&self, token: &str) -> Result<Authorization, ApiError>;
+
+    /// Method should be implemented (see example-code) to map Basic (Username:password) to an Authorization
+    fn basic_authorization(&self, basic: &Basic) -> Result<Authorization, ApiError>;
+} 
+
+// Implement it for AllowAllAuthenticator (dummy is needed, but should not used as we have Bearer authorization)
+use swagger::auth::{AllowAllAuthenticator, RcBound, Scopes};
+
+fn dummy_authorization() -> Authorization {
+    // Is called when MakeAllowAllAuthenticator is added to the stack. This is not needed as we have Bearer-authorization in the example-code.
+    // However, if you want to use it anyway this can not be unimplemented, so dummy implementation added.
+    // unimplemented!()
+    Authorization{
+        subject: "Dummmy".to_owned(),
+        scopes: Scopes::Some(BTreeSet::new()), // create an empty scope, as this should not be used
+        issuer: None
+    }
+}
+
+impl<T, RC> AuthenticationApi for AllowAllAuthenticator<T, RC>
+where
+    RC: RcBound,
+    RC::Result: Send + 'static {
+
+    /// Get method to map Bearer-token to an Authorization
+    fn bearer_authorization(&self, _token: &Bearer) -> Result<Authorization, ApiError> {
+        Ok(dummy_authorization())
+    }
+
+    /// Get method to map api-key to an Authorization
+    fn apikey_authorization(&self, _apikey: &str) -> Result<Authorization, ApiError> {
+        Ok(dummy_authorization())
+    }
+
+    /// Get method to map basic token to an Authorization
+    fn basic_authorization(&self, _basic: &Basic) -> Result<Authorization, ApiError> {
+        Ok(dummy_authorization())
+    }
+}

samples/server/petstore/rust-server/output/ops-v3/src/context.rs

@@ -8,7 +8,8 @@ use std::marker::PhantomData;
 use std::task::{Poll, Context};
 use swagger::auth::{AuthData, Authorization, Bearer, Scopes};
 use swagger::{EmptyContext, Has, Pop, Push, XSpanIdString};
-use crate::Api;
+use crate::{Api, AuthenticationApi};
+use log::error;
 
 pub struct MakeAddContext<T, A> {
     inner: T,
@@ -89,7 +90,7 @@ impl<T, A, B, C, D, ReqBody> Service<Request<ReqBody>> for AddContext<T, A, B, C
         B: Push<Option<AuthData>, Result=C>,
         C: Push<Option<Authorization>, Result=D>,
         D: Send + 'static,
-        T: Service<(Request<ReqBody>, D)>
+        T: Service<(Request<ReqBody>, D)> + AuthenticationApi
 {
     type Error = T::Error;
     type Future = T::Future;

samples/server/petstore/rust-server/output/ops-v3/src/lib.rs

@@ -1,19 +1,26 @@
 #![allow(missing_docs, trivial_casts, unused_variables, unused_mut, unused_imports, unused_extern_crates, non_camel_case_types)]
 #![allow(unused_imports, unused_attributes)]
-#![allow(clippy::derive_partial_eq_without_eq, clippy::disallowed_names, clippy::too_many_arguments)]
+#![allow(clippy::derive_partial_eq_without_eq, clippy::disallowed_names)]
 
 use async_trait::async_trait;
 use futures::Stream;
 use std::error::Error;
+use std::collections::BTreeSet;
 use std::task::{Poll, Context};
 use swagger::{ApiError, ContextWrapper};
 use serde::{Serialize, Deserialize};
+use crate::server::Authorization;
+
 
 type ServiceError = Box<dyn Error + Send + Sync + 'static>;
 
 pub const BASE_PATH: &str = "";
 pub const API_VERSION: &str = "0.0.1";
 
+mod auth;
+pub use auth::{AuthenticationApi, Claims};
+
+
 #[derive(Debug, PartialEq, Serialize, Deserialize)]
 pub enum Op10GetResponse {
     /// OK

samples/server/petstore/rust-server/output/ops-v3/src/server/mod.rs

@@ -14,8 +14,7 @@ use swagger::auth::Scopes;
 use url::form_urlencoded;
 
 #[allow(unused_imports)]
-use crate::models;
-use crate::header;
+use crate::{models, header, AuthenticationApi};
 
 pub use crate::context;
 
@@ -61,6 +60,8 @@ use crate::{Api,
      Op9GetResponse
 };
 
+mod server_auth;
+
 mod paths {
     use lazy_static::lazy_static;
 
@@ -145,6 +146,7 @@ mod paths {
     pub(crate) static ID_OP9: usize = 36;
 }
 
+
 pub struct MakeService<T, C> where
     T: Api<C> + Clone + Send + 'static,
     C: Has<XSpanIdString>  + Send + Sync + 'static
@@ -165,6 +167,7 @@ impl<T, C> MakeService<T, C> where
     }
 }
 
+
 impl<T, C, Target> hyper::service::Service<Target> for MakeService<T, C> where
     T: Api<C> + Clone + Send + 'static,
     C: Has<XSpanIdString>  + Send + Sync + 'static

samples/server/petstore/rust-server/output/ops-v3/src/server/server_auth.rs

@@ -0,0 +1,28 @@
+use super::Service;
+use crate::{Api, AuthenticationApi};
+use swagger::{
+    ApiError,
+    Authorization, 
+    auth::{Basic, Bearer}, 
+    Has, 
+    XSpanIdString};
+
+impl<T,C> AuthenticationApi for Service<T, C> where
+T: Api<C> + Clone + Send + 'static + AuthenticationApi,
+C: Has<XSpanIdString> + Has<Option<Authorization>> + Send + Sync + 'static {
+
+    /// Passthrough of the task to the api-implementation
+    fn bearer_authorization(&self, token: &Bearer) -> Result<Authorization, ApiError> {
+        self.api_impl.bearer_authorization(token)
+    }
+
+    /// Passthrough of the task to the api-implementation
+    fn apikey_authorization(&self, token: &str) -> Result<Authorization, ApiError> {
+        self.api_impl.apikey_authorization(token)
+    }
+
+    /// Passthrough of the task to the api-implementation
+    fn basic_authorization(&self, basic: &Basic) -> Result<Authorization, ApiError> {
+        self.api_impl.basic_authorization(basic)
+    }
+}

samples/server/petstore/rust-server/output/petstore-with-fake-endpoints-models-for-testing/.openapi-generator/FILES

@@ -48,14 +48,18 @@ docs/pet_api.md
 docs/store_api.md
 docs/user_api.md
 examples/ca.pem
+examples/client/client_auth.rs
 examples/client/main.rs
 examples/server-chain.pem
 examples/server-key.pem
 examples/server/main.rs
 examples/server/server.rs
+examples/server/server_auth.rs
+src/auth.rs
 src/client/mod.rs
 src/context.rs
 src/header.rs
 src/lib.rs
 src/models.rs
 src/server/mod.rs
+src/server/server_auth.rs

samples/server/petstore/rust-server/output/petstore-with-fake-endpoints-models-for-testing/Cargo.toml

@@ -4,7 +4,7 @@ version = "1.0.0"
 authors = ["OpenAPI Generator team and contributors"]
 description = "This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\"
 license = "Apache-2.0"
-edition = "2021"
+edition = "2018"
 publish = ["crates-io"]
 
 [features]
@@ -71,6 +71,9 @@ frunk_core = { version = "0.3.0", optional = true }
 frunk-enum-derive = { version = "0.2.0", optional = true }
 frunk-enum-core = { version = "0.2.0", optional = true }
 
+# Bearer authentication
+jsonwebtoken = { version = "9.3.0", optional = false }
+
 [dev-dependencies]
 clap = "2.25"
 env_logger = "0.7"

samples/server/petstore/rust-server/output/petstore-with-fake-endpoints-models-for-testing/examples/client/client_auth.rs

@@ -0,0 +1,17 @@
+use petstore_with_fake_endpoints_models_for_testing::Claims;
+use jsonwebtoken::{encode, errors::Error as JwtError, Algorithm, EncodingKey, Header};
+use log::debug;
+
+/// build an encrypted token with the provided claims.
+pub fn build_token(my_claims: Claims, key: &[u8]) -> Result<String, JwtError> {
+
+    // Ensure that you set the correct algorithm and correct key.
+    // See https://github.com/Keats/jsonwebtoken for more information.
+    let header =
+        Header { kid: Some("signing_key".to_owned()), alg: Algorithm::HS512, ..Default::default() };
+
+    let token = encode(&header, &my_claims, &EncodingKey::from_secret(key))?;
+    debug!("Derived token: {:?}", token);
+
+    Ok(token)
+}

samples/server/petstore/rust-server/output/petstore-with-fake-endpoints-models-for-testing/examples/client/main.rs

@@ -4,7 +4,7 @@
 #[allow(unused_imports)]
 use futures::{future, Stream, stream};
 #[allow(unused_imports)]
-use petstore_with_fake_endpoints_models_for_testing::{Api, ApiNoContext, Client, ContextWrapperExt, models,
+use petstore_with_fake_endpoints_models_for_testing::{Api, ApiNoContext, Claims, Client, ContextWrapperExt, models,
                       TestSpecialTagsResponse,
                       Call123exampleResponse,
                       FakeOuterBooleanSerializeResponse,
@@ -43,6 +43,9 @@ use petstore_with_fake_endpoints_models_for_testing::{Api, ApiNoContext, Client,
                      };
 use clap::{App, Arg};
 
+// NOTE: Set environment variable RUST_LOG to the name of the executable (or "cargo run") to activate console logging for all loglevels.
+//     See https://docs.rs/env_logger/latest/env_logger/  for more details
+
 #[allow(unused_imports)]
 use log::info;
 
@@ -52,6 +55,10 @@ use swagger::{AuthData, ContextBuilder, EmptyContext, Has, Push, XSpanIdString};
 
 type ClientContext = swagger::make_context_ty!(ContextBuilder, EmptyContext, Option<AuthData>, XSpanIdString);
 
+mod client_auth;
+use client_auth::build_token;
+
+
 // rt may be unused if there are no examples
 #[allow(unused_mut)]
 fn main() {
@@ -104,6 +111,34 @@ fn main() {
             .help("Port to contact"))
         .get_matches();
 
+    // Create Bearer-token with a fixed key (secret) for test purposes.
+    // In a real (production) system this Bearer token should be obtained via an external Identity/Authentication-server
+    // Ensure that you set the correct algorithm and encodingkey that matches what is used on the server side.
+    // See https://github.com/Keats/jsonwebtoken for more information
+
+    let auth_token = build_token(
+            Claims {
+                sub: "tester@acme.com".to_owned(), 
+                company: "ACME".to_owned(),
+                iss: "my_identity_provider".to_owned(),
+                // added a very long expiry time
+                aud: "org.acme.Resource_Server".to_string(),
+                exp: 10000000000,
+                // In this example code all available Scopes are added, so the current Bearer Token gets fully authorization.
+                scopes: [
+                            "write:pets",
+                            "read:pets",
+                ].join(", ")
+            }, 
+            b"secret").unwrap();
+
+    let auth_data = if !auth_token.is_empty() {
+        Some(AuthData::Bearer(swagger::auth::Bearer { token: auth_token}))
+    } else {
+        // No Bearer-token available, so return None
+        None
+    };
+
     let is_https = matches.is_present("https");
     let base_url = format!("{}://{}:{}",
         if is_https { "https" } else { "http" },
@@ -111,7 +146,7 @@ fn main() {
         matches.value_of("port").unwrap());
 
     let context: ClientContext =
-        swagger::make_context!(ContextBuilder, EmptyContext, None as Option<AuthData>, XSpanIdString::default());
+        swagger::make_context!(ContextBuilder, EmptyContext, auth_data, XSpanIdString::default());
 
     let mut client : Box<dyn ApiNoContext<ClientContext>> = if matches.is_present("https") {
         // Using Simple HTTPS

samples/server/petstore/rust-server/output/petstore-with-fake-endpoints-models-for-testing/examples/server/main.rs

@@ -1,10 +1,13 @@
 //! Main binary entry point for petstore_with_fake_endpoints_models_for_testing implementation.
+// This is the amended version that adds Authorization via Inversion of Control.
 
 #![allow(missing_docs)]
 
+
 use clap::{App, Arg};
 
 mod server;
+mod server_auth;
 
 
 /// Create custom server, wire it to the autogenerated router,

samples/server/petstore/rust-server/output/petstore-with-fake-endpoints-models-for-testing/examples/server/server.rs

@@ -30,7 +30,9 @@ pub async fn create(addr: &str, https: bool) {
 
     let service = MakeService::new(server);
 
-    let service = MakeAllowAllAuthenticator::new(service, "cosmo");
+    // This pushes a fourth layer of the middleware-stack even though Swagger assumes only three levels.
+    // This fourth layer creates an accept-all policy, hower the example-code already acchieves the same via a Bearer-token with full permissions, so next line is not needed (anymore).  
+    // let service = MakeAllowAllAuthenticator::new(service, "cosmo");
 
     #[allow(unused_mut)]
     let mut service =
@@ -56,6 +58,7 @@ pub async fn create(addr: &str, https: bool) {
             let tls_acceptor = ssl.build();
             let tcp_listener = TcpListener::bind(&addr).await.unwrap();
 
+            info!("Starting a server (with https)");
             loop {
                 if let Ok((tcp, _)) = tcp_listener.accept().await {
                     let ssl = Ssl::new(tls_acceptor.context()).unwrap();
@@ -75,6 +78,7 @@ pub async fn create(addr: &str, https: bool) {
             }
         }
     } else {
+        info!("Starting a server (over http, so no TLS)");
         // Using HTTP
         hyper::server::Server::bind(&addr).serve(service).await.unwrap()
     }
@@ -92,6 +96,12 @@ impl<C> Server<C> {
 }
 
 
+use jsonwebtoken::{decode, encode, errors::Error as JwtError, Algorithm, DecodingKey, EncodingKey, Header, TokenData, Validation};
+use serde::{Deserialize, Serialize};
+use swagger::auth::Authorization;
+use crate::server_auth;
+
+
 use petstore_with_fake_endpoints_models_for_testing::{
     Api,
     TestSpecialTagsResponse,
@@ -144,7 +154,7 @@ impl<C> Api<C> for Server<C> where C: Has<XSpanIdString> + Send + Sync
         context: &C) -> Result<TestSpecialTagsResponse, ApiError>
     {
         info!("test_special_tags({:?}) - X-Span-ID: {:?}", body, context.get().0.clone());
-        Err(ApiError("Generic failure".into()))
+        Err(ApiError("Api-Error: Operation is NOT implemented".into()))
     }
 
     async fn call123example(
@@ -152,7 +162,7 @@ impl<C> Api<C> for Server<C> where C: Has<XSpanIdString> + Send + Sync
         context: &C) -> Result<Call123exampleResponse, ApiError>
     {
         info!("call123example() - X-Span-ID: {:?}", context.get().0.clone());
-        Err(ApiError("Generic failure".into()))
+        Err(ApiError("Api-Error: Operation is NOT implemented".into()))
     }
 
     async fn fake_outer_boolean_serialize(
@@ -161,7 +171,7 @@ impl<C> Api<C> for Server<C> where C: Has<XSpanIdString> + Send + Sync
         context: &C) -> Result<FakeOuterBooleanSerializeResponse, ApiError>
     {
         info!("fake_outer_boolean_serialize({:?}) - X-Span-ID: {:?}", body, context.get().0.clone());
-        Err(ApiError("Generic failure".into()))
+        Err(ApiError("Api-Error: Operation is NOT implemented".into()))
     }
 
     async fn fake_outer_composite_serialize(
@@ -170,7 +180,7 @@ impl<C> Api<C> for Server<C> where C: Has<XSpanIdString> + Send + Sync
         context: &C) -> Result<FakeOuterCompositeSerializeResponse, ApiError>
     {
         info!("fake_outer_composite_serialize({:?}) - X-Span-ID: {:?}", body, context.get().0.clone());
-        Err(ApiError("Generic failure".into()))
+        Err(ApiError("Api-Error: Operation is NOT implemented".into()))
     }
 
     async fn fake_outer_number_serialize(
@@ -179,7 +189,7 @@ impl<C> Api<C> for Server<C> where C: Has<XSpanIdString> + Send + Sync
         context: &C) -> Result<FakeOuterNumberSerializeResponse, ApiError>
     {
         info!("fake_outer_number_serialize({:?}) - X-Span-ID: {:?}", body, context.get().0.clone());
-        Err(ApiError("Generic failure".into()))
+        Err(ApiError("Api-Error: Operation is NOT implemented".into()))
     }
 
     async fn fake_outer_string_serialize(
@@ -188,7 +198,7 @@ impl<C> Api<C> for Server<C> where C: Has<XSpanIdString> + Send + Sync
         context: &C) -> Result<FakeOuterStringSerializeResponse, ApiError>
     {
         info!("fake_outer_string_serialize({:?}) - X-Span-ID: {:?}", body, context.get().0.clone());
-        Err(ApiError("Generic failure".into()))
+        Err(ApiError("Api-Error: Operation is NOT implemented".into()))
     }
 
     async fn fake_response_with_numerical_description(
@@ -196,7 +206,7 @@ impl<C> Api<C> for Server<C> where C: Has<XSpanIdString> + Send + Sync
         context: &C) -> Result<FakeResponseWithNumericalDescriptionResponse, ApiError>
     {
         info!("fake_response_with_numerical_description() - X-Span-ID: {:?}", context.get().0.clone());
-        Err(ApiError("Generic failure".into()))
+        Err(ApiError("Api-Error: Operation is NOT implemented".into()))
     }
 
     async fn hyphen_param(
@@ -205,7 +215,7 @@ impl<C> Api<C> for Server<C> where C: Has<XSpanIdString> + Send + Sync
         context: &C) -> Result<HyphenParamResponse, ApiError>
     {
         info!("hyphen_param(\"{}\") - X-Span-ID: {:?}", hyphen_param, context.get().0.clone());
-        Err(ApiError("Generic failure".into()))
+        Err(ApiError("Api-Error: Operation is NOT implemented".into()))
     }
 
     async fn test_body_with_query_params(
@@ -215,7 +225,7 @@ impl<C> Api<C> for Server<C> where C: Has<XSpanIdString> + Send + Sync
         context: &C) -> Result<TestBodyWithQueryParamsResponse, ApiError>
     {
         info!("test_body_with_query_params(\"{}\", {:?}) - X-Span-ID: {:?}", query, body, context.get().0.clone());
-        Err(ApiError("Generic failure".into()))
+        Err(ApiError("Api-Error: Operation is NOT implemented".into()))
     }
 
     /// To test \"client\" model
@@ -225,7 +235,7 @@ impl<C> Api<C> for Server<C> where C: Has<XSpanIdString> + Send + Sync
         context: &C) -> Result<TestClientModelResponse, ApiError>
     {
         info!("test_client_model({:?}) - X-Span-ID: {:?}", body, context.get().0.clone());
-        Err(ApiError("Generic failure".into()))
+        Err(ApiError("Api-Error: Operation is NOT implemented".into()))
     }
 
     /// Fake endpoint for testing various parameters  假端點  偽のエンドポイント  가짜 엔드 포인트
@@ -248,7 +258,7 @@ impl<C> Api<C> for Server<C> where C: Has<XSpanIdString> + Send + Sync
         context: &C) -> Result<TestEndpointParametersResponse, ApiError>
     {
         info!("test_endpoint_parameters({}, {}, \"{}\", {:?}, {:?}, {:?}, {:?}, {:?}, {:?}, {:?}, {:?}, {:?}, {:?}, {:?}) - X-Span-ID: {:?}", number, double, pattern_without_delimiter, byte, integer, int32, int64, float, string, binary, date, date_time, password, callback, context.get().0.clone());
-        Err(ApiError("Generic failure".into()))
+        Err(ApiError("Api-Error: Operation is NOT implemented".into()))
     }
 
     /// To test enum parameters
@@ -264,7 +274,7 @@ impl<C> Api<C> for Server<C> where C: Has<XSpanIdString> + Send + Sync
         context: &C) -> Result<TestEnumParametersResponse, ApiError>
     {
         info!("test_enum_parameters({:?}, {:?}, {:?}, {:?}, {:?}, {:?}, {:?}) - X-Span-ID: {:?}", enum_header_string_array, enum_header_string, enum_query_string_array, enum_query_string, enum_query_integer, enum_query_double, enum_form_string, context.get().0.clone());
-        Err(ApiError("Generic failure".into()))
+        Err(ApiError("Api-Error: Operation is NOT implemented".into()))
     }
 
     /// test inline additionalProperties
@@ -274,7 +284,7 @@ impl<C> Api<C> for Server<C> where C: Has<XSpanIdString> + Send + Sync
         context: &C) -> Result<TestInlineAdditionalPropertiesResponse, ApiError>
     {
         info!("test_inline_additional_properties({:?}) - X-Span-ID: {:?}", param, context.get().0.clone());
-        Err(ApiError("Generic failure".into()))
+        Err(ApiError("Api-Error: Operation is NOT implemented".into()))
     }
 
     /// test json serialization of form data
@@ -285,7 +295,7 @@ impl<C> Api<C> for Server<C> where C: Has<XSpanIdString> + Send + Sync
         context: &C) -> Result<TestJsonFormDataResponse, ApiError>
     {
         info!("test_json_form_data(\"{}\", \"{}\") - X-Span-ID: {:?}", param, param2, context.get().0.clone());
-        Err(ApiError("Generic failure".into()))
+        Err(ApiError("Api-Error: Operation is NOT implemented".into()))
     }
 
     /// To test class name in snake case
@@ -295,7 +305,7 @@ impl<C> Api<C> for Server<C> where C: Has<XSpanIdString> + Send + Sync
         context: &C) -> Result<TestClassnameResponse, ApiError>
     {
         info!("test_classname({:?}) - X-Span-ID: {:?}", body, context.get().0.clone());
-        Err(ApiError("Generic failure".into()))
+        Err(ApiError("Api-Error: Operation is NOT implemented".into()))
     }
 
     /// Add a new pet to the store
@@ -305,7 +315,7 @@ impl<C> Api<C> for Server<C> where C: Has<XSpanIdString> + Send + Sync
         context: &C) -> Result<AddPetResponse, ApiError>
     {
         info!("add_pet({:?}) - X-Span-ID: {:?}", body, context.get().0.clone());
-        Err(ApiError("Generic failure".into()))
+        Err(ApiError("Api-Error: Operation is NOT implemented".into()))
     }
 
     /// Deletes a pet
@@ -316,7 +326,7 @@ impl<C> Api<C> for Server<C> where C: Has<XSpanIdString> + Send + Sync
         context: &C) -> Result<DeletePetResponse, ApiError>
     {
         info!("delete_pet({}, {:?}) - X-Span-ID: {:?}", pet_id, api_key, context.get().0.clone());
-        Err(ApiError("Generic failure".into()))
+        Err(ApiError("Api-Error: Operation is NOT implemented".into()))
     }
 
     /// Finds Pets by status
@@ -326,7 +336,7 @@ impl<C> Api<C> for Server<C> where C: Has<XSpanIdString> + Send + Sync
         context: &C) -> Result<FindPetsByStatusResponse, ApiError>
     {
         info!("find_pets_by_status({:?}) - X-Span-ID: {:?}", status, context.get().0.clone());
-        Err(ApiError("Generic failure".into()))
+        Err(ApiError("Api-Error: Operation is NOT implemented".into()))
     }
 
     /// Finds Pets by tags
@@ -336,7 +346,7 @@ impl<C> Api<C> for Server<C> where C: Has<XSpanIdString> + Send + Sync
         context: &C) -> Result<FindPetsByTagsResponse, ApiError>
     {
         info!("find_pets_by_tags({:?}) - X-Span-ID: {:?}", tags, context.get().0.clone());
-        Err(ApiError("Generic failure".into()))
+        Err(ApiError("Api-Error: Operation is NOT implemented".into()))
     }
 
     /// Find pet by ID
@@ -346,7 +356,7 @@ impl<C> Api<C> for Server<C> where C: Has<XSpanIdString> + Send + Sync
         context: &C) -> Result<GetPetByIdResponse, ApiError>
     {
         info!("get_pet_by_id({}) - X-Span-ID: {:?}", pet_id, context.get().0.clone());
-        Err(ApiError("Generic failure".into()))
+        Err(ApiError("Api-Error: Operation is NOT implemented".into()))
     }
 
     /// Update an existing pet
@@ -356,7 +366,7 @@ impl<C> Api<C> for Server<C> where C: Has<XSpanIdString> + Send + Sync
         context: &C) -> Result<UpdatePetResponse, ApiError>
     {
         info!("update_pet({:?}) - X-Span-ID: {:?}", body, context.get().0.clone());
-        Err(ApiError("Generic failure".into()))
+        Err(ApiError("Api-Error: Operation is NOT implemented".into()))
     }
 
     /// Updates a pet in the store with form data
@@ -368,7 +378,7 @@ impl<C> Api<C> for Server<C> where C: Has<XSpanIdString> + Send + Sync
         context: &C) -> Result<UpdatePetWithFormResponse, ApiError>
     {
         info!("update_pet_with_form({}, {:?}, {:?}) - X-Span-ID: {:?}", pet_id, name, status, context.get().0.clone());
-        Err(ApiError("Generic failure".into()))
+        Err(ApiError("Api-Error: Operation is NOT implemented".into()))
     }
 
     /// uploads an image
@@ -380,7 +390,7 @@ impl<C> Api<C> for Server<C> where C: Has<XSpanIdString> + Send + Sync
         context: &C) -> Result<UploadFileResponse, ApiError>
     {
         info!("upload_file({}, {:?}, {:?}) - X-Span-ID: {:?}", pet_id, additional_metadata, file, context.get().0.clone());
-        Err(ApiError("Generic failure".into()))
+        Err(ApiError("Api-Error: Operation is NOT implemented".into()))
     }
 
     /// Delete purchase order by ID
@@ -390,7 +400,7 @@ impl<C> Api<C> for Server<C> where C: Has<XSpanIdString> + Send + Sync
         context: &C) -> Result<DeleteOrderResponse, ApiError>
     {
         info!("delete_order(\"{}\") - X-Span-ID: {:?}", order_id, context.get().0.clone());
-        Err(ApiError("Generic failure".into()))
+        Err(ApiError("Api-Error: Operation is NOT implemented".into()))
     }
 
     /// Returns pet inventories by status
@@ -399,7 +409,7 @@ impl<C> Api<C> for Server<C> where C: Has<XSpanIdString> + Send + Sync
         context: &C) -> Result<GetInventoryResponse, ApiError>
     {
         info!("get_inventory() - X-Span-ID: {:?}", context.get().0.clone());
-        Err(ApiError("Generic failure".into()))
+        Err(ApiError("Api-Error: Operation is NOT implemented".into()))
     }
 
     /// Find purchase order by ID
@@ -409,7 +419,7 @@ impl<C> Api<C> for Server<C> where C: Has<XSpanIdString> + Send + Sync
         context: &C) -> Result<GetOrderByIdResponse, ApiError>
     {
         info!("get_order_by_id({}) - X-Span-ID: {:?}", order_id, context.get().0.clone());
-        Err(ApiError("Generic failure".into()))
+        Err(ApiError("Api-Error: Operation is NOT implemented".into()))
     }
 
     /// Place an order for a pet
@@ -419,7 +429,7 @@ impl<C> Api<C> for Server<C> where C: Has<XSpanIdString> + Send + Sync
         context: &C) -> Result<PlaceOrderResponse, ApiError>
     {
         info!("place_order({:?}) - X-Span-ID: {:?}", body, context.get().0.clone());
-        Err(ApiError("Generic failure".into()))
+        Err(ApiError("Api-Error: Operation is NOT implemented".into()))
     }
 
     /// Create user
@@ -429,7 +439,7 @@ impl<C> Api<C> for Server<C> where C: Has<XSpanIdString> + Send + Sync
         context: &C) -> Result<CreateUserResponse, ApiError>
     {
         info!("create_user({:?}) - X-Span-ID: {:?}", body, context.get().0.clone());
-        Err(ApiError("Generic failure".into()))
+        Err(ApiError("Api-Error: Operation is NOT implemented".into()))
     }
 
     /// Creates list of users with given input array
@@ -439,7 +449,7 @@ impl<C> Api<C> for Server<C> where C: Has<XSpanIdString> + Send + Sync
         context: &C) -> Result<CreateUsersWithArrayInputResponse, ApiError>
     {
         info!("create_users_with_array_input({:?}) - X-Span-ID: {:?}", body, context.get().0.clone());
-        Err(ApiError("Generic failure".into()))
+        Err(ApiError("Api-Error: Operation is NOT implemented".into()))
     }
 
     /// Creates list of users with given input array
@@ -449,7 +459,7 @@ impl<C> Api<C> for Server<C> where C: Has<XSpanIdString> + Send + Sync
         context: &C) -> Result<CreateUsersWithListInputResponse, ApiError>
     {
         info!("create_users_with_list_input({:?}) - X-Span-ID: {:?}", body, context.get().0.clone());
-        Err(ApiError("Generic failure".into()))
+        Err(ApiError("Api-Error: Operation is NOT implemented".into()))
     }
 
     /// Delete user
@@ -459,7 +469,7 @@ impl<C> Api<C> for Server<C> where C: Has<XSpanIdString> + Send + Sync
         context: &C) -> Result<DeleteUserResponse, ApiError>
     {
         info!("delete_user(\"{}\") - X-Span-ID: {:?}", username, context.get().0.clone());
-        Err(ApiError("Generic failure".into()))
+        Err(ApiError("Api-Error: Operation is NOT implemented".into()))
     }
 
     /// Get user by user name
@@ -469,7 +479,7 @@ impl<C> Api<C> for Server<C> where C: Has<XSpanIdString> + Send + Sync
         context: &C) -> Result<GetUserByNameResponse, ApiError>
     {
         info!("get_user_by_name(\"{}\") - X-Span-ID: {:?}", username, context.get().0.clone());
-        Err(ApiError("Generic failure".into()))
+        Err(ApiError("Api-Error: Operation is NOT implemented".into()))
     }
 
     /// Logs user into the system
@@ -480,7 +490,7 @@ impl<C> Api<C> for Server<C> where C: Has<XSpanIdString> + Send + Sync
         context: &C) -> Result<LoginUserResponse, ApiError>
     {
         info!("login_user(\"{}\", \"{}\") - X-Span-ID: {:?}", username, password, context.get().0.clone());
-        Err(ApiError("Generic failure".into()))
+        Err(ApiError("Api-Error: Operation is NOT implemented".into()))
     }
 
     /// Logs out current logged in user session
@@ -489,7 +499,7 @@ impl<C> Api<C> for Server<C> where C: Has<XSpanIdString> + Send + Sync
         context: &C) -> Result<LogoutUserResponse, ApiError>
     {
         info!("logout_user() - X-Span-ID: {:?}", context.get().0.clone());
-        Err(ApiError("Generic failure".into()))
+        Err(ApiError("Api-Error: Operation is NOT implemented".into()))
     }
 
     /// Updated user
@@ -500,7 +510,7 @@ impl<C> Api<C> for Server<C> where C: Has<XSpanIdString> + Send + Sync
         context: &C) -> Result<UpdateUserResponse, ApiError>
     {
         info!("update_user(\"{}\", {:?}) - X-Span-ID: {:?}", username, body, context.get().0.clone());
-        Err(ApiError("Generic failure".into()))
+        Err(ApiError("Api-Error: Operation is NOT implemented".into()))
     }
 
 }

samples/server/petstore/rust-server/output/petstore-with-fake-endpoints-models-for-testing/examples/server/server_auth.rs

@@ -0,0 +1,129 @@
+use swagger::{
+    ApiError,
+    auth::{Basic, Bearer},
+    Has, 
+    XSpanIdString};
+use petstore_with_fake_endpoints_models_for_testing::{AuthenticationApi, Claims};
+use crate::server::Server;
+use jsonwebtoken::{decode, errors as JwtError, decode_header, DecodingKey, TokenData, Validation};
+use swagger::auth::Authorization;
+use log::{error, debug};
+
+// NOTE: Set environment variable RUST_LOG to the name of the executable (or "cargo run") to activate console logging for all loglevels.
+//     See https://docs.rs/env_logger/latest/env_logger/  for more details
+
+
+/// Get a dummy claim with full permissions (all scopes) for testing purposes
+fn full_permission_claim() -> Claims {
+        Claims {
+            sub: "tester@acme.com".to_owned(), 
+            company: "ACME".to_owned(),
+            iss: "mini-bank-IDP".to_owned(),
+            aud: "org.acme.Resource_Server".to_string(),
+            // added a very long expiry time
+            exp: 10000000000,
+            // In this example code all available Scopes are added, so the current Bearer Token gets fully authorization.
+            scopes: [
+                        "write:pets",
+                        "read:pets",
+            ].join(", ")
+        }
+}
+
+
+
+/// Extract the data from a Bearer token using the provided Key (secret) and using the HS512-algorithm in this example. 
+fn extract_token_data(token: &str, key: &[u8]) -> Result<TokenData<Claims>, JwtError::Error> {
+    
+    // Ensure that you set the correct algorithm and correct key.
+    // See https://github.com/Keats/jsonwebtoken for more information.
+    let header = decode_header(token)?;
+    let validation = {
+        let mut validation = Validation::new(header.alg);
+        validation.set_audience(&["org.acme.Resource_Server"]);
+        validation.validate_exp = true;
+        validation
+    };
+
+    let token_data = decode::<Claims>(
+        &token,
+        &DecodingKey::from_secret(key),
+        &validation,
+    )?;
+
+    Ok(token_data)
+}
+
+/// Build a swagger-Authorization based on the claims (Assuming claims have been extracted from a validated token)
+fn build_authorization(claims: Claims) -> Authorization {
+    let mut scopes = std::collections::BTreeSet::<String>::new();
+    claims
+        .scopes
+        .split(",")
+        .map(|s| s.trim())
+        .for_each(|s| {let _ = scopes.insert(s.to_string()); });
+    let scopes = swagger::auth::Scopes::Some(scopes);
+
+    Authorization{
+        subject: claims.sub, 
+        scopes, 
+        issuer: Some(claims.iss)}
+}
+
+fn get_jwt_error_string(error: JwtError::Error) -> String {
+    match error.kind() {
+        JwtError::ErrorKind::InvalidSignature => "Incorrect token signature".to_owned(),
+        JwtError::ErrorKind::InvalidAlgorithm => "The Algorithm is not correct".to_owned(),
+        JwtError::ErrorKind::ExpiredSignature => "The token has expired".to_owned(),
+        JwtError::ErrorKind::Base64(e) => format!("Base64 decode failed: {e}"),
+        JwtError::ErrorKind::Json(e) => format!("JSON decoding: {e}"),
+        JwtError::ErrorKind::Utf8(e) => format!("Invalid UTF-8: {e}"),
+        _ => error.to_string()
+    }
+}
+
+
+impl<C> AuthenticationApi for Server<C> where C: Has<XSpanIdString> + Send + Sync {
+
+    /// Implementation of the method to map a Bearer-token to an Authorization
+    fn bearer_authorization(&self, bearer: &Bearer) -> Result<Authorization, ApiError> {
+        debug!("\tAuthorizationApi: Received Bearer-token, {bearer:#?}");
+
+        match extract_token_data(&bearer.token, b"secret") {
+            Ok(auth_data) => {
+                debug!("\tUnpack auth_data as: {auth_data:#?}");
+                let authorization = build_authorization(auth_data.claims);
+                Ok(authorization)
+            },
+            Err(err) => {
+                let msg = get_jwt_error_string(err);
+                error!("Failed to unpack Bearer-token: {msg}");
+                Err(ApiError(msg))
+            }
+        }
+    }
+
+    /// Implementation of the method to map an api-key to an Authorization
+    fn apikey_authorization(&self, api_key: &str) -> Result<Authorization, ApiError> {
+        debug!("\tAuthorizationApi: Received api-key, {api_key:#?}");
+
+        // TODO: insert the logic to map received apikey to the set of claims 
+        let claims = full_permission_claim();
+
+        // and build an authorization out of it
+        Ok(build_authorization(claims))
+    }
+    
+    /// Implementation of the method to map a basic authentication (username and password) to an Authorization
+    fn basic_authorization(&self, basic: &Basic) -> Result<Authorization, ApiError> {
+        debug!("\tAuthorizationApi: Received Basic-token, {basic:#?}");
+
+        // TODO: insert the logic to map received apikey to the set of claims 
+        let claims = full_permission_claim();
+
+        // and build an authorization out of it
+        Ok(build_authorization(claims))
+    }
+
+} 
+

samples/server/petstore/rust-server/output/petstore-with-fake-endpoints-models-for-testing/src/auth.rs

@@ -0,0 +1,62 @@
+use std::collections::BTreeSet;
+use crate::server::Authorization;
+use serde::{Deserialize, Serialize};
+use swagger::{ApiError, auth::{Basic, Bearer}};
+
+#[derive(Debug, Serialize, Deserialize)]
+pub struct Claims {
+    pub sub: String,
+    pub iss: String,
+    pub aud: String,
+    pub company: String,
+    pub exp: u64,
+    pub scopes: String,
+}
+
+
+pub trait AuthenticationApi {
+
+    /// Method should be implemented (see example-code) to map Bearer-token to an Authorization
+    fn bearer_authorization(&self, token: &Bearer) -> Result<Authorization, ApiError>;
+
+    /// Method should be implemented (see example-code) to map ApiKey to an Authorization
+    fn apikey_authorization(&self, token: &str) -> Result<Authorization, ApiError>;
+
+    /// Method should be implemented (see example-code) to map Basic (Username:password) to an Authorization
+    fn basic_authorization(&self, basic: &Basic) -> Result<Authorization, ApiError>;
+} 
+
+// Implement it for AllowAllAuthenticator (dummy is needed, but should not used as we have Bearer authorization)
+use swagger::auth::{AllowAllAuthenticator, RcBound, Scopes};
+
+fn dummy_authorization() -> Authorization {
+    // Is called when MakeAllowAllAuthenticator is added to the stack. This is not needed as we have Bearer-authorization in the example-code.
+    // However, if you want to use it anyway this can not be unimplemented, so dummy implementation added.
+    // unimplemented!()
+    Authorization{
+        subject: "Dummmy".to_owned(),
+        scopes: Scopes::Some(BTreeSet::new()), // create an empty scope, as this should not be used
+        issuer: None
+    }
+}
+
+impl<T, RC> AuthenticationApi for AllowAllAuthenticator<T, RC>
+where
+    RC: RcBound,
+    RC::Result: Send + 'static {
+
+    /// Get method to map Bearer-token to an Authorization
+    fn bearer_authorization(&self, _token: &Bearer) -> Result<Authorization, ApiError> {
+        Ok(dummy_authorization())
+    }
+
+    /// Get method to map api-key to an Authorization
+    fn apikey_authorization(&self, _apikey: &str) -> Result<Authorization, ApiError> {
+        Ok(dummy_authorization())
+    }
+
+    /// Get method to map basic token to an Authorization
+    fn basic_authorization(&self, _basic: &Basic) -> Result<Authorization, ApiError> {
+        Ok(dummy_authorization())
+    }
+}

samples/server/petstore/rust-server/output/petstore-with-fake-endpoints-models-for-testing/src/context.rs

@@ -8,7 +8,8 @@ use std::marker::PhantomData;
 use std::task::{Poll, Context};
 use swagger::auth::{AuthData, Authorization, Bearer, Scopes};
 use swagger::{EmptyContext, Has, Pop, Push, XSpanIdString};
-use crate::Api;
+use crate::{Api, AuthenticationApi};
+use log::error;
 
 pub struct MakeAddContext<T, A> {
     inner: T,
@@ -89,7 +90,7 @@ impl<T, A, B, C, D, ReqBody> Service<Request<ReqBody>> for AddContext<T, A, B, C
         B: Push<Option<AuthData>, Result=C>,
         C: Push<Option<Authorization>, Result=D>,
         D: Send + 'static,
-        T: Service<(Request<ReqBody>, D)>
+        T: Service<(Request<ReqBody>, D)> + AuthenticationApi
 {
     type Error = T::Error;
     type Future = T::Future;
@@ -108,9 +109,17 @@ impl<T, A, B, C, D, ReqBody> Service<Request<ReqBody>> for AddContext<T, A, B, C
             use swagger::auth::Bearer;
             use std::ops::Deref;
             if let Some(bearer) = swagger::auth::from_headers::<Bearer>(headers) {
+                let authorization = self.inner.bearer_authorization(&bearer);
                 let auth_data = AuthData::Bearer(bearer);
+
                 let context = context.push(Some(auth_data));
-                let context = context.push(None::<Authorization>);
+                let context = match authorization {
+                    Ok(auth) => context.push(Some(auth)),
+                    Err(err) => {
+                        error!("Error during Authorization: {err:?}");
+                        context.push(None::<Authorization>)
+                    }
+                };
 
                 return self.inner.call((request, context))
             }
@@ -119,9 +128,17 @@ impl<T, A, B, C, D, ReqBody> Service<Request<ReqBody>> for AddContext<T, A, B, C
             use swagger::auth::api_key_from_header;
 
             if let Some(header) = api_key_from_header(headers, "api_key") {
+                let authorization = self.inner.apikey_authorization(&header);
                 let auth_data = AuthData::ApiKey(header);
+
                 let context = context.push(Some(auth_data));
-                let context = context.push(None::<Authorization>);
+                let context = match authorization {
+                    Ok(auth) => context.push(Some(auth)),
+                    Err(err) => {
+                        error!("Error during Authorization: {err:?}");
+                        context.push(None::<Authorization>)
+                    }
+                };
 
                 return self.inner.call((request, context))
             }
@@ -132,9 +149,17 @@ impl<T, A, B, C, D, ReqBody> Service<Request<ReqBody>> for AddContext<T, A, B, C
                 .map(|e| e.1.clone().into_owned())
                 .next();
             if let Some(key) = key {
+                let authorization = self.inner.apikey_authorization(&key);
                 let auth_data = AuthData::ApiKey(key);
+
                 let context = context.push(Some(auth_data));
-                let context = context.push(None::<Authorization>);
+                let context = match authorization {
+                    Ok(auth) => context.push(Some(auth)),
+                    Err(err) => {
+                        error!("Error during Authorization: {err:?}");
+                        context.push(None::<Authorization>)
+                    }
+                };
 
                 return self.inner.call((request, context))
             }
@@ -143,9 +168,17 @@ impl<T, A, B, C, D, ReqBody> Service<Request<ReqBody>> for AddContext<T, A, B, C
             use swagger::auth::Basic;
             use std::ops::Deref;
             if let Some(basic) = swagger::auth::from_headers::<Basic>(headers) {
+                let authorization = self.inner.basic_authorization(&basic);
                 let auth_data = AuthData::Basic(basic);
+
                 let context = context.push(Some(auth_data));
-                let context = context.push(None::<Authorization>);
+                let context = match authorization {
+                    Ok(auth) => context.push(Some(auth)),
+                    Err(err) => {
+                        error!("Error during Authorization: {err:?}");
+                        context.push(None::<Authorization>)
+                    }
+                };
 
                 return self.inner.call((request, context))
             }

samples/server/petstore/rust-server/output/petstore-with-fake-endpoints-models-for-testing/src/lib.rs

@@ -1,19 +1,26 @@
 #![allow(missing_docs, trivial_casts, unused_variables, unused_mut, unused_imports, unused_extern_crates, non_camel_case_types)]
 #![allow(unused_imports, unused_attributes)]
-#![allow(clippy::derive_partial_eq_without_eq, clippy::disallowed_names, clippy::too_many_arguments)]
+#![allow(clippy::derive_partial_eq_without_eq, clippy::disallowed_names)]
 
 use async_trait::async_trait;
 use futures::Stream;
 use std::error::Error;
+use std::collections::BTreeSet;
 use std::task::{Poll, Context};
 use swagger::{ApiError, ContextWrapper};
 use serde::{Serialize, Deserialize};
+use crate::server::Authorization;
+
 
 type ServiceError = Box<dyn Error + Send + Sync + 'static>;
 
 pub const BASE_PATH: &str = "/v2";
 pub const API_VERSION: &str = "1.0.0";
 
+mod auth;
+pub use auth::{AuthenticationApi, Claims};
+
+
 #[derive(Debug, PartialEq, Serialize, Deserialize)]
 pub enum TestSpecialTagsResponse {
     /// successful operation

samples/server/petstore/rust-server/output/petstore-with-fake-endpoints-models-for-testing/src/server/mod.rs

@@ -16,8 +16,7 @@ use multipart::server::Multipart;
 use multipart::server::save::SaveResult;
 
 #[allow(unused_imports)]
-use crate::models;
-use crate::header;
+use crate::{models, header, AuthenticationApi};
 
 pub use crate::context;
 
@@ -61,6 +60,8 @@ use crate::{Api,
      UpdateUserResponse
 };
 
+mod server_auth;
+
 mod paths {
     use lazy_static::lazy_static;
 
@@ -155,6 +156,7 @@ mod paths {
     }
 }
 
+
 pub struct MakeService<T, C> where
     T: Api<C> + Clone + Send + 'static,
     C: Has<XSpanIdString> + Has<Option<Authorization>> + Send + Sync + 'static
@@ -175,6 +177,7 @@ impl<T, C> MakeService<T, C> where
     }
 }
 
+
 impl<T, C, Target> hyper::service::Service<Target> for MakeService<T, C> where
     T: Api<C> + Clone + Send + 'static,
     C: Has<XSpanIdString> + Has<Option<Authorization>> + Send + Sync + 'static
@@ -268,11 +271,10 @@ impl<T, C> hyper::service::Service<(Request<Body>, C)> for Service<T, C> where
                                 let mut unused_elements = Vec::new();
                                 let param_body: Option<models::Client> = if !body.is_empty() {
                                     let deserializer = &mut serde_json::Deserializer::from_slice(&body);
-                                    let handle_unknown_field = |path: serde_ignored::Path<'_>| {
+                                    match serde_ignored::deserialize(deserializer, |path| {
                                             warn!("Ignoring unknown field in body: {}", path);
                                             unused_elements.push(path.to_string());
-                                    };
-                                    match serde_ignored::deserialize(deserializer, handle_unknown_field) {
+                                    }) {
                                         Ok(param_body) => param_body,
                                         Err(e) => return Ok(Response::builder()
                                                         .status(StatusCode::BAD_REQUEST)
@@ -378,11 +380,10 @@ impl<T, C> hyper::service::Service<(Request<Body>, C)> for Service<T, C> where
                                 let mut unused_elements = Vec::new();
                                 let param_body: Option<models::OuterBoolean> = if !body.is_empty() {
                                     let deserializer = &mut serde_json::Deserializer::from_slice(&body);
-                                    let handle_unknown_field = |path: serde_ignored::Path<'_>| {
+                                    match serde_ignored::deserialize(deserializer, |path| {
                                             warn!("Ignoring unknown field in body: {}", path);
                                             unused_elements.push(path.to_string());
-                                    };
-                                    match serde_ignored::deserialize(deserializer, handle_unknown_field) {
+                                    }) {
                                         Ok(param_body) => param_body,
                                         Err(_) => None,
                                     }
@@ -449,11 +450,10 @@ impl<T, C> hyper::service::Service<(Request<Body>, C)> for Service<T, C> where
                                 let mut unused_elements = Vec::new();
                                 let param_body: Option<models::OuterComposite> = if !body.is_empty() {
                                     let deserializer = &mut serde_json::Deserializer::from_slice(&body);
-                                    let handle_unknown_field = |path: serde_ignored::Path<'_>| {
+                                    match serde_ignored::deserialize(deserializer, |path| {
                                             warn!("Ignoring unknown field in body: {}", path);
                                             unused_elements.push(path.to_string());
-                                    };
-                                    match serde_ignored::deserialize(deserializer, handle_unknown_field) {
+                                    }) {
                                         Ok(param_body) => param_body,
                                         Err(_) => None,
                                     }
@@ -520,11 +520,10 @@ impl<T, C> hyper::service::Service<(Request<Body>, C)> for Service<T, C> where
                                 let mut unused_elements = Vec::new();
                                 let param_body: Option<models::OuterNumber> = if !body.is_empty() {
                                     let deserializer = &mut serde_json::Deserializer::from_slice(&body);
-                                    let handle_unknown_field = |path: serde_ignored::Path<'_>| {
+                                    match serde_ignored::deserialize(deserializer, |path| {
                                             warn!("Ignoring unknown field in body: {}", path);
                                             unused_elements.push(path.to_string());
-                                    };
-                                    match serde_ignored::deserialize(deserializer, handle_unknown_field) {
+                                    }) {
                                         Ok(param_body) => param_body,
                                         Err(_) => None,
                                     }
@@ -591,11 +590,10 @@ impl<T, C> hyper::service::Service<(Request<Body>, C)> for Service<T, C> where
                                 let mut unused_elements = Vec::new();
                                 let param_body: Option<models::OuterString> = if !body.is_empty() {
                                     let deserializer = &mut serde_json::Deserializer::from_slice(&body);
-                                    let handle_unknown_field = |path: serde_ignored::Path<'_>| {
+                                    match serde_ignored::deserialize(deserializer, |path| {
                                             warn!("Ignoring unknown field in body: {}", path);
                                             unused_elements.push(path.to_string());
-                                    };
-                                    match serde_ignored::deserialize(deserializer, handle_unknown_field) {
+                                    }) {
                                         Ok(param_body) => param_body,
                                         Err(_) => None,
                                     }
@@ -771,11 +769,10 @@ impl<T, C> hyper::service::Service<(Request<Body>, C)> for Service<T, C> where
                                 let mut unused_elements = Vec::new();
                                 let param_body: Option<models::User> = if !body.is_empty() {
                                     let deserializer = &mut serde_json::Deserializer::from_slice(&body);
-                                    let handle_unknown_field = |path: serde_ignored::Path<'_>| {
+                                    match serde_ignored::deserialize(deserializer, |path| {
                                             warn!("Ignoring unknown field in body: {}", path);
                                             unused_elements.push(path.to_string());
-                                    };
-                                    match serde_ignored::deserialize(deserializer, handle_unknown_field) {
+                                    }) {
                                         Ok(param_body) => param_body,
                                         Err(e) => return Ok(Response::builder()
                                                         .status(StatusCode::BAD_REQUEST)
@@ -846,11 +843,10 @@ impl<T, C> hyper::service::Service<(Request<Body>, C)> for Service<T, C> where
                                 let mut unused_elements = Vec::new();
                                 let param_body: Option<models::Client> = if !body.is_empty() {
                                     let deserializer = &mut serde_json::Deserializer::from_slice(&body);
-                                    let handle_unknown_field = |path: serde_ignored::Path<'_>| {
+                                    match serde_ignored::deserialize(deserializer, |path| {
                                             warn!("Ignoring unknown field in body: {}", path);
                                             unused_elements.push(path.to_string());
-                                    };
-                                    match serde_ignored::deserialize(deserializer, handle_unknown_field) {
+                                    }) {
                                         Ok(param_body) => param_body,
                                         Err(e) => return Ok(Response::builder()
                                                         .status(StatusCode::BAD_REQUEST)
@@ -1143,11 +1139,10 @@ impl<T, C> hyper::service::Service<(Request<Body>, C)> for Service<T, C> where
                                 let mut unused_elements = Vec::new();
                                 let param_param: Option<std::collections::HashMap<String, String>> = if !body.is_empty() {
                                     let deserializer = &mut serde_json::Deserializer::from_slice(&body);
-                                    let handle_unknown_field = |path: serde_ignored::Path<'_>| {
+                                    match serde_ignored::deserialize(deserializer, |path| {
                                             warn!("Ignoring unknown field in body: {}", path);
                                             unused_elements.push(path.to_string());
-                                    };
-                                    match serde_ignored::deserialize(deserializer, handle_unknown_field) {
+                                    }) {
                                         Ok(param_param) => param_param,
                                         Err(e) => return Ok(Response::builder()
                                                         .status(StatusCode::BAD_REQUEST)
@@ -1262,11 +1257,10 @@ impl<T, C> hyper::service::Service<(Request<Body>, C)> for Service<T, C> where
                                 let mut unused_elements = Vec::new();
                                 let param_body: Option<models::Client> = if !body.is_empty() {
                                     let deserializer = &mut serde_json::Deserializer::from_slice(&body);
-                                    let handle_unknown_field = |path: serde_ignored::Path<'_>| {
+                                    match serde_ignored::deserialize(deserializer, |path| {
                                             warn!("Ignoring unknown field in body: {}", path);
                                             unused_elements.push(path.to_string());
-                                    };
-                                    match serde_ignored::deserialize(deserializer, handle_unknown_field) {
+                                    }) {
                                         Ok(param_body) => param_body,
                                         Err(e) => return Ok(Response::builder()
                                                         .status(StatusCode::BAD_REQUEST)
@@ -1373,11 +1367,10 @@ impl<T, C> hyper::service::Service<(Request<Body>, C)> for Service<T, C> where
                                 let mut unused_elements = Vec::new();
                                 let param_body: Option<models::Pet> = if !body.is_empty() {
                                     let deserializer = &mut serde_xml_rs::de::Deserializer::new_from_reader(&*body);
-                                    let handle_unknown_field = |path: serde_ignored::Path<'_>| {
+                                    match serde_ignored::deserialize(deserializer, |path| {
                                             warn!("Ignoring unknown field in body: {}", path);
                                             unused_elements.push(path.to_string());
-                                    };
-                                    match serde_ignored::deserialize(deserializer, handle_unknown_field) {
+                                    }) {
                                         Ok(param_body) => param_body,
                                         Err(e) => return Ok(Response::builder()
                                                         .status(StatusCode::BAD_REQUEST)
@@ -1813,11 +1806,10 @@ impl<T, C> hyper::service::Service<(Request<Body>, C)> for Service<T, C> where
                                 let mut unused_elements = Vec::new();
                                 let param_body: Option<models::Pet> = if !body.is_empty() {
                                     let deserializer = &mut serde_xml_rs::de::Deserializer::new_from_reader(&*body);
-                                    let handle_unknown_field = |path: serde_ignored::Path<'_>| {
+                                    match serde_ignored::deserialize(deserializer, |path| {
                                             warn!("Ignoring unknown field in body: {}", path);
                                             unused_elements.push(path.to_string());
-                                    };
-                                    match serde_ignored::deserialize(deserializer, handle_unknown_field) {
+                                    }) {
                                         Ok(param_body) => param_body,
                                         Err(e) => return Ok(Response::builder()
                                                         .status(StatusCode::BAD_REQUEST)
@@ -2329,11 +2321,10 @@ impl<T, C> hyper::service::Service<(Request<Body>, C)> for Service<T, C> where
                                 let mut unused_elements = Vec::new();
                                 let param_body: Option<models::Order> = if !body.is_empty() {
                                     let deserializer = &mut serde_json::Deserializer::from_slice(&body);
-                                    let handle_unknown_field = |path: serde_ignored::Path<'_>| {
+                                    match serde_ignored::deserialize(deserializer, |path| {
                                             warn!("Ignoring unknown field in body: {}", path);
                                             unused_elements.push(path.to_string());
-                                    };
-                                    match serde_ignored::deserialize(deserializer, handle_unknown_field) {
+                                    }) {
                                         Ok(param_body) => param_body,
                                         Err(e) => return Ok(Response::builder()
                                                         .status(StatusCode::BAD_REQUEST)
@@ -2414,11 +2405,10 @@ impl<T, C> hyper::service::Service<(Request<Body>, C)> for Service<T, C> where
                                 let mut unused_elements = Vec::new();
                                 let param_body: Option<models::User> = if !body.is_empty() {
                                     let deserializer = &mut serde_json::Deserializer::from_slice(&body);
-                                    let handle_unknown_field = |path: serde_ignored::Path<'_>| {
+                                    match serde_ignored::deserialize(deserializer, |path| {
                                             warn!("Ignoring unknown field in body: {}", path);
                                             unused_elements.push(path.to_string());
-                                    };
-                                    match serde_ignored::deserialize(deserializer, handle_unknown_field) {
+                                    }) {
                                         Ok(param_body) => param_body,
                                         Err(e) => return Ok(Response::builder()
                                                         .status(StatusCode::BAD_REQUEST)
@@ -2488,11 +2478,10 @@ impl<T, C> hyper::service::Service<(Request<Body>, C)> for Service<T, C> where
                                 let mut unused_elements = Vec::new();
                                 let param_body: Option<Vec<models::User>> = if !body.is_empty() {
                                     let deserializer = &mut serde_json::Deserializer::from_slice(&body);
-                                    let handle_unknown_field = |path: serde_ignored::Path<'_>| {
+                                    match serde_ignored::deserialize(deserializer, |path| {
                                             warn!("Ignoring unknown field in body: {}", path);
                                             unused_elements.push(path.to_string());
-                                    };
-                                    match serde_ignored::deserialize(deserializer, handle_unknown_field) {
+                                    }) {
                                         Ok(param_body) => param_body,
                                         Err(e) => return Ok(Response::builder()
                                                         .status(StatusCode::BAD_REQUEST)
@@ -2562,11 +2551,10 @@ impl<T, C> hyper::service::Service<(Request<Body>, C)> for Service<T, C> where
                                 let mut unused_elements = Vec::new();
                                 let param_body: Option<Vec<models::User>> = if !body.is_empty() {
                                     let deserializer = &mut serde_json::Deserializer::from_slice(&body);
-                                    let handle_unknown_field = |path: serde_ignored::Path<'_>| {
+                                    match serde_ignored::deserialize(deserializer, |path| {
                                             warn!("Ignoring unknown field in body: {}", path);
                                             unused_elements.push(path.to_string());
-                                    };
-                                    match serde_ignored::deserialize(deserializer, handle_unknown_field) {
+                                    }) {
                                         Ok(param_body) => param_body,
                                         Err(e) => return Ok(Response::builder()
                                                         .status(StatusCode::BAD_REQUEST)
@@ -2942,11 +2930,10 @@ impl<T, C> hyper::service::Service<(Request<Body>, C)> for Service<T, C> where
                                 let mut unused_elements = Vec::new();
                                 let param_body: Option<models::User> = if !body.is_empty() {
                                     let deserializer = &mut serde_json::Deserializer::from_slice(&body);
-                                    let handle_unknown_field = |path: serde_ignored::Path<'_>| {
+                                    match serde_ignored::deserialize(deserializer, |path| {
                                             warn!("Ignoring unknown field in body: {}", path);
                                             unused_elements.push(path.to_string());
-                                    };
-                                    match serde_ignored::deserialize(deserializer, handle_unknown_field) {
+                                    }) {
                                         Ok(param_body) => param_body,
                                         Err(e) => return Ok(Response::builder()
                                                         .status(StatusCode::BAD_REQUEST)

samples/server/petstore/rust-server/output/petstore-with-fake-endpoints-models-for-testing/src/server/server_auth.rs

@@ -0,0 +1,28 @@
+use super::Service;
+use crate::{Api, AuthenticationApi};
+use swagger::{
+    ApiError,
+    Authorization, 
+    auth::{Basic, Bearer}, 
+    Has, 
+    XSpanIdString};
+
+impl<T,C> AuthenticationApi for Service<T, C> where
+T: Api<C> + Clone + Send + 'static + AuthenticationApi,
+C: Has<XSpanIdString> + Has<Option<Authorization>> + Send + Sync + 'static {
+
+    /// Passthrough of the task to the api-implementation
+    fn bearer_authorization(&self, token: &Bearer) -> Result<Authorization, ApiError> {
+        self.api_impl.bearer_authorization(token)
+    }
+
+    /// Passthrough of the task to the api-implementation
+    fn apikey_authorization(&self, token: &str) -> Result<Authorization, ApiError> {
+        self.api_impl.apikey_authorization(token)
+    }
+
+    /// Passthrough of the task to the api-implementation
+    fn basic_authorization(&self, basic: &Basic) -> Result<Authorization, ApiError> {
+        self.api_impl.basic_authorization(basic)
+    }
+}

samples/server/petstore/rust-server/output/ping-bearer-auth/.openapi-generator/FILES

@@ -5,14 +5,18 @@ README.md
 api/openapi.yaml
 docs/default_api.md
 examples/ca.pem
+examples/client/client_auth.rs
 examples/client/main.rs
 examples/server-chain.pem
 examples/server-key.pem
 examples/server/main.rs
 examples/server/server.rs
+examples/server/server_auth.rs
+src/auth.rs
 src/client/mod.rs
 src/context.rs
 src/header.rs
 src/lib.rs
 src/models.rs
 src/server/mod.rs
+src/server/server_auth.rs

samples/server/petstore/rust-server/output/ping-bearer-auth/Cargo.toml

@@ -5,7 +5,7 @@ authors = ["OpenAPI Generator team and contributors"]
 description = "No description provided (generated by Openapi Generator https://github.com/openapitools/openapi-generator)"
 # Override this license by providing a License Object in the OpenAPI.
 license = "Unlicense"
-edition = "2021"
+edition = "2018"
 
 [features]
 default = ["client", "server"]
@@ -59,6 +59,9 @@ frunk_core = { version = "0.3.0", optional = true }
 frunk-enum-derive = { version = "0.2.0", optional = true }
 frunk-enum-core = { version = "0.2.0", optional = true }
 
+# Bearer authentication
+jsonwebtoken = { version = "9.3.0", optional = false }
+
 [dev-dependencies]
 clap = "2.25"
 env_logger = "0.7"

samples/server/petstore/rust-server/output/ping-bearer-auth/examples/client/client_auth.rs

@@ -0,0 +1,17 @@
+use ping_bearer_auth::Claims;
+use jsonwebtoken::{encode, errors::Error as JwtError, Algorithm, EncodingKey, Header};
+use log::debug;
+
+/// build an encrypted token with the provided claims.
+pub fn build_token(my_claims: Claims, key: &[u8]) -> Result<String, JwtError> {
+
+    // Ensure that you set the correct algorithm and correct key.
+    // See https://github.com/Keats/jsonwebtoken for more information.
+    let header =
+        Header { kid: Some("signing_key".to_owned()), alg: Algorithm::HS512, ..Default::default() };
+
+    let token = encode(&header, &my_claims, &EncodingKey::from_secret(key))?;
+    debug!("Derived token: {:?}", token);
+
+    Ok(token)
+}

samples/server/petstore/rust-server/output/ping-bearer-auth/examples/client/main.rs

@@ -4,11 +4,14 @@
 #[allow(unused_imports)]
 use futures::{future, Stream, stream};
 #[allow(unused_imports)]
-use ping_bearer_auth::{Api, ApiNoContext, Client, ContextWrapperExt, models,
+use ping_bearer_auth::{Api, ApiNoContext, Claims, Client, ContextWrapperExt, models,
                       PingGetResponse,
                      };
 use clap::{App, Arg};
 
+// NOTE: Set environment variable RUST_LOG to the name of the executable (or "cargo run") to activate console logging for all loglevels.
+//     See https://docs.rs/env_logger/latest/env_logger/  for more details
+
 #[allow(unused_imports)]
 use log::info;
 
@@ -18,6 +21,10 @@ use swagger::{AuthData, ContextBuilder, EmptyContext, Has, Push, XSpanIdString};
 
 type ClientContext = swagger::make_context_ty!(ContextBuilder, EmptyContext, Option<AuthData>, XSpanIdString);
 
+mod client_auth;
+use client_auth::build_token;
+
+
 // rt may be unused if there are no examples
 #[allow(unused_mut)]
 fn main() {
@@ -46,6 +53,32 @@ fn main() {
             .help("Port to contact"))
         .get_matches();
 
+    // Create Bearer-token with a fixed key (secret) for test purposes.
+    // In a real (production) system this Bearer token should be obtained via an external Identity/Authentication-server
+    // Ensure that you set the correct algorithm and encodingkey that matches what is used on the server side.
+    // See https://github.com/Keats/jsonwebtoken for more information
+
+    let auth_token = build_token(
+            Claims {
+                sub: "tester@acme.com".to_owned(), 
+                company: "ACME".to_owned(),
+                iss: "my_identity_provider".to_owned(),
+                // added a very long expiry time
+                aud: "org.acme.Resource_Server".to_string(),
+                exp: 10000000000,
+                // In this example code all available Scopes are added, so the current Bearer Token gets fully authorization.
+                scopes: [
+                ].join(", ")
+            }, 
+            b"secret").unwrap();
+
+    let auth_data = if !auth_token.is_empty() {
+        Some(AuthData::Bearer(swagger::auth::Bearer { token: auth_token}))
+    } else {
+        // No Bearer-token available, so return None
+        None
+    };
+
     let is_https = matches.is_present("https");
     let base_url = format!("{}://{}:{}",
         if is_https { "https" } else { "http" },
@@ -53,7 +86,7 @@ fn main() {
         matches.value_of("port").unwrap());
 
     let context: ClientContext =
-        swagger::make_context!(ContextBuilder, EmptyContext, None as Option<AuthData>, XSpanIdString::default());
+        swagger::make_context!(ContextBuilder, EmptyContext, auth_data, XSpanIdString::default());
 
     let mut client : Box<dyn ApiNoContext<ClientContext>> = if matches.is_present("https") {
         // Using Simple HTTPS

samples/server/petstore/rust-server/output/ping-bearer-auth/examples/server/main.rs

@@ -1,10 +1,13 @@
 //! Main binary entry point for ping_bearer_auth implementation.
+// This is the amended version that adds Authorization via Inversion of Control.
 
 #![allow(missing_docs)]
 
+
 use clap::{App, Arg};
 
 mod server;
+mod server_auth;
 
 
 /// Create custom server, wire it to the autogenerated router,

samples/server/petstore/rust-server/output/ping-bearer-auth/examples/server/server.rs

@@ -30,7 +30,9 @@ pub async fn create(addr: &str, https: bool) {
 
     let service = MakeService::new(server);
 
-    let service = MakeAllowAllAuthenticator::new(service, "cosmo");
+    // This pushes a fourth layer of the middleware-stack even though Swagger assumes only three levels.
+    // This fourth layer creates an accept-all policy, hower the example-code already acchieves the same via a Bearer-token with full permissions, so next line is not needed (anymore).  
+    // let service = MakeAllowAllAuthenticator::new(service, "cosmo");
 
     #[allow(unused_mut)]
     let mut service =
@@ -56,6 +58,7 @@ pub async fn create(addr: &str, https: bool) {
             let tls_acceptor = ssl.build();
             let tcp_listener = TcpListener::bind(&addr).await.unwrap();
 
+            info!("Starting a server (with https)");
             loop {
                 if let Ok((tcp, _)) = tcp_listener.accept().await {
                     let ssl = Ssl::new(tls_acceptor.context()).unwrap();
@@ -75,6 +78,7 @@ pub async fn create(addr: &str, https: bool) {
             }
         }
     } else {
+        info!("Starting a server (over http, so no TLS)");
         // Using HTTP
         hyper::server::Server::bind(&addr).serve(service).await.unwrap()
     }
@@ -92,6 +96,12 @@ impl<C> Server<C> {
 }
 
 
+use jsonwebtoken::{decode, encode, errors::Error as JwtError, Algorithm, DecodingKey, EncodingKey, Header, TokenData, Validation};
+use serde::{Deserialize, Serialize};
+use swagger::auth::Authorization;
+use crate::server_auth;
+
+
 use ping_bearer_auth::{
     Api,
     PingGetResponse,
@@ -108,7 +118,7 @@ impl<C> Api<C> for Server<C> where C: Has<XSpanIdString> + Send + Sync
         context: &C) -> Result<PingGetResponse, ApiError>
     {
         info!("ping_get() - X-Span-ID: {:?}", context.get().0.clone());
-        Err(ApiError("Generic failure".into()))
+        Err(ApiError("Api-Error: Operation is NOT implemented".into()))
     }
 
 }

samples/server/petstore/rust-server/output/ping-bearer-auth/examples/server/server_auth.rs

@@ -0,0 +1,127 @@
+use swagger::{
+    ApiError,
+    auth::{Basic, Bearer},
+    Has, 
+    XSpanIdString};
+use ping_bearer_auth::{AuthenticationApi, Claims};
+use crate::server::Server;
+use jsonwebtoken::{decode, errors as JwtError, decode_header, DecodingKey, TokenData, Validation};
+use swagger::auth::Authorization;
+use log::{error, debug};
+
+// NOTE: Set environment variable RUST_LOG to the name of the executable (or "cargo run") to activate console logging for all loglevels.
+//     See https://docs.rs/env_logger/latest/env_logger/  for more details
+
+
+/// Get a dummy claim with full permissions (all scopes) for testing purposes
+fn full_permission_claim() -> Claims {
+        Claims {
+            sub: "tester@acme.com".to_owned(), 
+            company: "ACME".to_owned(),
+            iss: "mini-bank-IDP".to_owned(),
+            aud: "org.acme.Resource_Server".to_string(),
+            // added a very long expiry time
+            exp: 10000000000,
+            // In this example code all available Scopes are added, so the current Bearer Token gets fully authorization.
+            scopes: [
+            ].join(", ")
+        }
+}
+
+
+
+/// Extract the data from a Bearer token using the provided Key (secret) and using the HS512-algorithm in this example. 
+fn extract_token_data(token: &str, key: &[u8]) -> Result<TokenData<Claims>, JwtError::Error> {
+    
+    // Ensure that you set the correct algorithm and correct key.
+    // See https://github.com/Keats/jsonwebtoken for more information.
+    let header = decode_header(token)?;
+    let validation = {
+        let mut validation = Validation::new(header.alg);
+        validation.set_audience(&["org.acme.Resource_Server"]);
+        validation.validate_exp = true;
+        validation
+    };
+
+    let token_data = decode::<Claims>(
+        &token,
+        &DecodingKey::from_secret(key),
+        &validation,
+    )?;
+
+    Ok(token_data)
+}
+
+/// Build a swagger-Authorization based on the claims (Assuming claims have been extracted from a validated token)
+fn build_authorization(claims: Claims) -> Authorization {
+    let mut scopes = std::collections::BTreeSet::<String>::new();
+    claims
+        .scopes
+        .split(",")
+        .map(|s| s.trim())
+        .for_each(|s| {let _ = scopes.insert(s.to_string()); });
+    let scopes = swagger::auth::Scopes::Some(scopes);
+
+    Authorization{
+        subject: claims.sub, 
+        scopes, 
+        issuer: Some(claims.iss)}
+}
+
+fn get_jwt_error_string(error: JwtError::Error) -> String {
+    match error.kind() {
+        JwtError::ErrorKind::InvalidSignature => "Incorrect token signature".to_owned(),
+        JwtError::ErrorKind::InvalidAlgorithm => "The Algorithm is not correct".to_owned(),
+        JwtError::ErrorKind::ExpiredSignature => "The token has expired".to_owned(),
+        JwtError::ErrorKind::Base64(e) => format!("Base64 decode failed: {e}"),
+        JwtError::ErrorKind::Json(e) => format!("JSON decoding: {e}"),
+        JwtError::ErrorKind::Utf8(e) => format!("Invalid UTF-8: {e}"),
+        _ => error.to_string()
+    }
+}
+
+
+impl<C> AuthenticationApi for Server<C> where C: Has<XSpanIdString> + Send + Sync {
+
+    /// Implementation of the method to map a Bearer-token to an Authorization
+    fn bearer_authorization(&self, bearer: &Bearer) -> Result<Authorization, ApiError> {
+        debug!("\tAuthorizationApi: Received Bearer-token, {bearer:#?}");
+
+        match extract_token_data(&bearer.token, b"secret") {
+            Ok(auth_data) => {
+                debug!("\tUnpack auth_data as: {auth_data:#?}");
+                let authorization = build_authorization(auth_data.claims);
+                Ok(authorization)
+            },
+            Err(err) => {
+                let msg = get_jwt_error_string(err);
+                error!("Failed to unpack Bearer-token: {msg}");
+                Err(ApiError(msg))
+            }
+        }
+    }
+
+    /// Implementation of the method to map an api-key to an Authorization
+    fn apikey_authorization(&self, api_key: &str) -> Result<Authorization, ApiError> {
+        debug!("\tAuthorizationApi: Received api-key, {api_key:#?}");
+
+        // TODO: insert the logic to map received apikey to the set of claims 
+        let claims = full_permission_claim();
+
+        // and build an authorization out of it
+        Ok(build_authorization(claims))
+    }
+    
+    /// Implementation of the method to map a basic authentication (username and password) to an Authorization
+    fn basic_authorization(&self, basic: &Basic) -> Result<Authorization, ApiError> {
+        debug!("\tAuthorizationApi: Received Basic-token, {basic:#?}");
+
+        // TODO: insert the logic to map received apikey to the set of claims 
+        let claims = full_permission_claim();
+
+        // and build an authorization out of it
+        Ok(build_authorization(claims))
+    }
+
+} 
+

samples/server/petstore/rust-server/output/ping-bearer-auth/src/auth.rs

@@ -0,0 +1,62 @@
+use std::collections::BTreeSet;
+use crate::server::Authorization;
+use serde::{Deserialize, Serialize};
+use swagger::{ApiError, auth::{Basic, Bearer}};
+
+#[derive(Debug, Serialize, Deserialize)]
+pub struct Claims {
+    pub sub: String,
+    pub iss: String,
+    pub aud: String,
+    pub company: String,
+    pub exp: u64,
+    pub scopes: String,
+}
+
+
+pub trait AuthenticationApi {
+
+    /// Method should be implemented (see example-code) to map Bearer-token to an Authorization
+    fn bearer_authorization(&self, token: &Bearer) -> Result<Authorization, ApiError>;
+
+    /// Method should be implemented (see example-code) to map ApiKey to an Authorization
+    fn apikey_authorization(&self, token: &str) -> Result<Authorization, ApiError>;
+
+    /// Method should be implemented (see example-code) to map Basic (Username:password) to an Authorization
+    fn basic_authorization(&self, basic: &Basic) -> Result<Authorization, ApiError>;
+} 
+
+// Implement it for AllowAllAuthenticator (dummy is needed, but should not used as we have Bearer authorization)
+use swagger::auth::{AllowAllAuthenticator, RcBound, Scopes};
+
+fn dummy_authorization() -> Authorization {
+    // Is called when MakeAllowAllAuthenticator is added to the stack. This is not needed as we have Bearer-authorization in the example-code.
+    // However, if you want to use it anyway this can not be unimplemented, so dummy implementation added.
+    // unimplemented!()
+    Authorization{
+        subject: "Dummmy".to_owned(),
+        scopes: Scopes::Some(BTreeSet::new()), // create an empty scope, as this should not be used
+        issuer: None
+    }
+}
+
+impl<T, RC> AuthenticationApi for AllowAllAuthenticator<T, RC>
+where
+    RC: RcBound,
+    RC::Result: Send + 'static {
+
+    /// Get method to map Bearer-token to an Authorization
+    fn bearer_authorization(&self, _token: &Bearer) -> Result<Authorization, ApiError> {
+        Ok(dummy_authorization())
+    }
+
+    /// Get method to map api-key to an Authorization
+    fn apikey_authorization(&self, _apikey: &str) -> Result<Authorization, ApiError> {
+        Ok(dummy_authorization())
+    }
+
+    /// Get method to map basic token to an Authorization
+    fn basic_authorization(&self, _basic: &Basic) -> Result<Authorization, ApiError> {
+        Ok(dummy_authorization())
+    }
+}

samples/server/petstore/rust-server/output/ping-bearer-auth/src/context.rs

@@ -8,7 +8,8 @@ use std::marker::PhantomData;
 use std::task::{Poll, Context};
 use swagger::auth::{AuthData, Authorization, Bearer, Scopes};
 use swagger::{EmptyContext, Has, Pop, Push, XSpanIdString};
-use crate::Api;
+use crate::{Api, AuthenticationApi};
+use log::error;
 
 pub struct MakeAddContext<T, A> {
     inner: T,
@@ -89,7 +90,7 @@ impl<T, A, B, C, D, ReqBody> Service<Request<ReqBody>> for AddContext<T, A, B, C
         B: Push<Option<AuthData>, Result=C>,
         C: Push<Option<Authorization>, Result=D>,
         D: Send + 'static,
-        T: Service<(Request<ReqBody>, D)>
+        T: Service<(Request<ReqBody>, D)> + AuthenticationApi
 {
     type Error = T::Error;
     type Future = T::Future;
@@ -108,9 +109,17 @@ impl<T, A, B, C, D, ReqBody> Service<Request<ReqBody>> for AddContext<T, A, B, C
             use swagger::auth::Bearer;
             use std::ops::Deref;
             if let Some(bearer) = swagger::auth::from_headers::<Bearer>(headers) {
+                let authorization = self.inner.bearer_authorization(&bearer);
                 let auth_data = AuthData::Bearer(bearer);
+
                 let context = context.push(Some(auth_data));
-                let context = context.push(None::<Authorization>);
+                let context = match authorization {
+                    Ok(auth) => context.push(Some(auth)),
+                    Err(err) => {
+                        error!("Error during Authorization: {err:?}");
+                        context.push(None::<Authorization>)
+                    }
+                };
 
                 return self.inner.call((request, context))
             }

samples/server/petstore/rust-server/output/ping-bearer-auth/src/lib.rs

@@ -1,19 +1,26 @@
 #![allow(missing_docs, trivial_casts, unused_variables, unused_mut, unused_imports, unused_extern_crates, non_camel_case_types)]
 #![allow(unused_imports, unused_attributes)]
-#![allow(clippy::derive_partial_eq_without_eq, clippy::disallowed_names, clippy::too_many_arguments)]
+#![allow(clippy::derive_partial_eq_without_eq, clippy::disallowed_names)]
 
 use async_trait::async_trait;
 use futures::Stream;
 use std::error::Error;
+use std::collections::BTreeSet;
 use std::task::{Poll, Context};
 use swagger::{ApiError, ContextWrapper};
 use serde::{Serialize, Deserialize};
+use crate::server::Authorization;
+
 
 type ServiceError = Box<dyn Error + Send + Sync + 'static>;
 
 pub const BASE_PATH: &str = "";
 pub const API_VERSION: &str = "1.0";
 
+mod auth;
+pub use auth::{AuthenticationApi, Claims};
+
+
 #[derive(Debug, PartialEq, Serialize, Deserialize)]
 pub enum PingGetResponse {
     /// OK

samples/server/petstore/rust-server/output/ping-bearer-auth/src/server/mod.rs

@@ -14,8 +14,7 @@ use swagger::auth::Scopes;
 use url::form_urlencoded;
 
 #[allow(unused_imports)]
-use crate::models;
-use crate::header;
+use crate::{models, header, AuthenticationApi};
 
 pub use crate::context;
 
@@ -25,6 +24,8 @@ use crate::{Api,
      PingGetResponse
 };
 
+mod server_auth;
+
 mod paths {
     use lazy_static::lazy_static;
 
@@ -37,6 +38,7 @@ mod paths {
     pub(crate) static ID_PING: usize = 0;
 }
 
+
 pub struct MakeService<T, C> where
     T: Api<C> + Clone + Send + 'static,
     C: Has<XSpanIdString> + Has<Option<Authorization>> + Send + Sync + 'static
@@ -57,6 +59,7 @@ impl<T, C> MakeService<T, C> where
     }
 }
 
+
 impl<T, C, Target> hyper::service::Service<Target> for MakeService<T, C> where
     T: Api<C> + Clone + Send + 'static,
     C: Has<XSpanIdString> + Has<Option<Authorization>> + Send + Sync + 'static

samples/server/petstore/rust-server/output/ping-bearer-auth/src/server/server_auth.rs

@@ -0,0 +1,28 @@
+use super::Service;
+use crate::{Api, AuthenticationApi};
+use swagger::{
+    ApiError,
+    Authorization, 
+    auth::{Basic, Bearer}, 
+    Has, 
+    XSpanIdString};
+
+impl<T,C> AuthenticationApi for Service<T, C> where
+T: Api<C> + Clone + Send + 'static + AuthenticationApi,
+C: Has<XSpanIdString> + Has<Option<Authorization>> + Send + Sync + 'static {
+
+    /// Passthrough of the task to the api-implementation
+    fn bearer_authorization(&self, token: &Bearer) -> Result<Authorization, ApiError> {
+        self.api_impl.bearer_authorization(token)
+    }
+
+    /// Passthrough of the task to the api-implementation
+    fn apikey_authorization(&self, token: &str) -> Result<Authorization, ApiError> {
+        self.api_impl.apikey_authorization(token)
+    }
+
+    /// Passthrough of the task to the api-implementation
+    fn basic_authorization(&self, basic: &Basic) -> Result<Authorization, ApiError> {
+        self.api_impl.basic_authorization(basic)
+    }
+}

samples/server/petstore/rust-server/output/rust-server-test/.openapi-generator/FILES

@@ -13,14 +13,18 @@ docs/ObjectOfObjects.md
 docs/ObjectOfObjectsInner.md
 docs/default_api.md
 examples/ca.pem
+examples/client/client_auth.rs
 examples/client/main.rs
 examples/server-chain.pem
 examples/server-key.pem
 examples/server/main.rs
 examples/server/server.rs
+examples/server/server_auth.rs
+src/auth.rs
 src/client/mod.rs
 src/context.rs
 src/header.rs
 src/lib.rs
 src/models.rs
 src/server/mod.rs
+src/server/server_auth.rs

samples/server/petstore/rust-server/output/rust-server-test/Cargo.toml

@@ -5,7 +5,7 @@ authors = ["OpenAPI Generator team and contributors"]
 description = "This spec is for testing rust-server-specific things"
 # Override this license by providing a License Object in the OpenAPI.
 license = "Unlicense"
-edition = "2021"
+edition = "2018"
 
 [features]
 default = ["client", "server"]
@@ -59,6 +59,9 @@ frunk_core = { version = "0.3.0", optional = true }
 frunk-enum-derive = { version = "0.2.0", optional = true }
 frunk-enum-core = { version = "0.2.0", optional = true }
 
+# Bearer authentication
+jsonwebtoken = { version = "9.3.0", optional = false }
+
 [dev-dependencies]
 clap = "2.25"
 env_logger = "0.7"

samples/server/petstore/rust-server/output/rust-server-test/examples/client/client_auth.rs

@@ -0,0 +1,17 @@
+use rust_server_test::Claims;
+use jsonwebtoken::{encode, errors::Error as JwtError, Algorithm, EncodingKey, Header};
+use log::debug;
+
+/// build an encrypted token with the provided claims.
+pub fn build_token(my_claims: Claims, key: &[u8]) -> Result<String, JwtError> {
+
+    // Ensure that you set the correct algorithm and correct key.
+    // See https://github.com/Keats/jsonwebtoken for more information.
+    let header =
+        Header { kid: Some("signing_key".to_owned()), alg: Algorithm::HS512, ..Default::default() };
+
+    let token = encode(&header, &my_claims, &EncodingKey::from_secret(key))?;
+    debug!("Derived token: {:?}", token);
+
+    Ok(token)
+}

samples/server/petstore/rust-server/output/rust-server-test/examples/client/main.rs

@@ -4,7 +4,7 @@
 #[allow(unused_imports)]
 use futures::{future, Stream, stream};
 #[allow(unused_imports)]
-use rust_server_test::{Api, ApiNoContext, Client, ContextWrapperExt, models,
+use rust_server_test::{Api, ApiNoContext, Claims, Client, ContextWrapperExt, models,
                       AllOfGetResponse,
                       DummyGetResponse,
                       DummyPutResponse,
@@ -17,6 +17,9 @@ use rust_server_test::{Api, ApiNoContext, Client, ContextWrapperExt, models,
                      };
 use clap::{App, Arg};
 
+// NOTE: Set environment variable RUST_LOG to the name of the executable (or "cargo run") to activate console logging for all loglevels.
+//     See https://docs.rs/env_logger/latest/env_logger/  for more details
+
 #[allow(unused_imports)]
 use log::info;
 
@@ -26,6 +29,10 @@ use swagger::{AuthData, ContextBuilder, EmptyContext, Has, Push, XSpanIdString};
 
 type ClientContext = swagger::make_context_ty!(ContextBuilder, EmptyContext, Option<AuthData>, XSpanIdString);
 
+mod client_auth;
+use client_auth::build_token;
+
+
 // rt may be unused if there are no examples
 #[allow(unused_mut)]
 fn main() {
@@ -60,6 +67,32 @@ fn main() {
             .help("Port to contact"))
         .get_matches();
 
+    // Create Bearer-token with a fixed key (secret) for test purposes.
+    // In a real (production) system this Bearer token should be obtained via an external Identity/Authentication-server
+    // Ensure that you set the correct algorithm and encodingkey that matches what is used on the server side.
+    // See https://github.com/Keats/jsonwebtoken for more information
+
+    let auth_token = build_token(
+            Claims {
+                sub: "tester@acme.com".to_owned(), 
+                company: "ACME".to_owned(),
+                iss: "my_identity_provider".to_owned(),
+                // added a very long expiry time
+                aud: "org.acme.Resource_Server".to_string(),
+                exp: 10000000000,
+                // In this example code all available Scopes are added, so the current Bearer Token gets fully authorization.
+                scopes: [
+                ].join(", ")
+            }, 
+            b"secret").unwrap();
+
+    let auth_data = if !auth_token.is_empty() {
+        Some(AuthData::Bearer(swagger::auth::Bearer { token: auth_token}))
+    } else {
+        // No Bearer-token available, so return None
+        None
+    };
+
     let is_https = matches.is_present("https");
     let base_url = format!("{}://{}:{}",
         if is_https { "https" } else { "http" },
@@ -67,7 +100,7 @@ fn main() {
         matches.value_of("port").unwrap());
 
     let context: ClientContext =
-        swagger::make_context!(ContextBuilder, EmptyContext, None as Option<AuthData>, XSpanIdString::default());
+        swagger::make_context!(ContextBuilder, EmptyContext, auth_data, XSpanIdString::default());
 
     let mut client : Box<dyn ApiNoContext<ClientContext>> = if matches.is_present("https") {
         // Using Simple HTTPS

samples/server/petstore/rust-server/output/rust-server-test/examples/server/main.rs

@@ -1,10 +1,13 @@
 //! Main binary entry point for rust_server_test implementation.
+// This is the amended version that adds Authorization via Inversion of Control.
 
 #![allow(missing_docs)]
 
+
 use clap::{App, Arg};
 
 mod server;
+mod server_auth;
 
 
 /// Create custom server, wire it to the autogenerated router,

samples/server/petstore/rust-server/output/rust-server-test/examples/server/server.rs

@@ -30,7 +30,9 @@ pub async fn create(addr: &str, https: bool) {
 
     let service = MakeService::new(server);
 
-    let service = MakeAllowAllAuthenticator::new(service, "cosmo");
+    // This pushes a fourth layer of the middleware-stack even though Swagger assumes only three levels.
+    // This fourth layer creates an accept-all policy, hower the example-code already acchieves the same via a Bearer-token with full permissions, so next line is not needed (anymore).  
+    // let service = MakeAllowAllAuthenticator::new(service, "cosmo");
 
     #[allow(unused_mut)]
     let mut service =
@@ -56,6 +58,7 @@ pub async fn create(addr: &str, https: bool) {
             let tls_acceptor = ssl.build();
             let tcp_listener = TcpListener::bind(&addr).await.unwrap();
 
+            info!("Starting a server (with https)");
             loop {
                 if let Ok((tcp, _)) = tcp_listener.accept().await {
                     let ssl = Ssl::new(tls_acceptor.context()).unwrap();
@@ -75,6 +78,7 @@ pub async fn create(addr: &str, https: bool) {
             }
         }
     } else {
+        info!("Starting a server (over http, so no TLS)");
         // Using HTTP
         hyper::server::Server::bind(&addr).serve(service).await.unwrap()
     }
@@ -92,6 +96,12 @@ impl<C> Server<C> {
 }
 
 
+use jsonwebtoken::{decode, encode, errors::Error as JwtError, Algorithm, DecodingKey, EncodingKey, Header, TokenData, Validation};
+use serde::{Deserialize, Serialize};
+use swagger::auth::Authorization;
+use crate::server_auth;
+
+
 use rust_server_test::{
     Api,
     AllOfGetResponse,
@@ -116,7 +126,7 @@ impl<C> Api<C> for Server<C> where C: Has<XSpanIdString> + Send + Sync
         context: &C) -> Result<AllOfGetResponse, ApiError>
     {
         info!("all_of_get() - X-Span-ID: {:?}", context.get().0.clone());
-        Err(ApiError("Generic failure".into()))
+        Err(ApiError("Api-Error: Operation is NOT implemented".into()))
     }
 
     /// A dummy endpoint to make the spec valid.
@@ -125,7 +135,7 @@ impl<C> Api<C> for Server<C> where C: Has<XSpanIdString> + Send + Sync
         context: &C) -> Result<DummyGetResponse, ApiError>
     {
         info!("dummy_get() - X-Span-ID: {:?}", context.get().0.clone());
-        Err(ApiError("Generic failure".into()))
+        Err(ApiError("Api-Error: Operation is NOT implemented".into()))
     }
 
     async fn dummy_put(
@@ -134,7 +144,7 @@ impl<C> Api<C> for Server<C> where C: Has<XSpanIdString> + Send + Sync
         context: &C) -> Result<DummyPutResponse, ApiError>
     {
         info!("dummy_put({:?}) - X-Span-ID: {:?}", nested_response, context.get().0.clone());
-        Err(ApiError("Generic failure".into()))
+        Err(ApiError("Api-Error: Operation is NOT implemented".into()))
     }
 
     /// Get a file
@@ -143,7 +153,7 @@ impl<C> Api<C> for Server<C> where C: Has<XSpanIdString> + Send + Sync
         context: &C) -> Result<FileResponseGetResponse, ApiError>
     {
         info!("file_response_get() - X-Span-ID: {:?}", context.get().0.clone());
-        Err(ApiError("Generic failure".into()))
+        Err(ApiError("Api-Error: Operation is NOT implemented".into()))
     }
 
     async fn get_structured_yaml(
@@ -151,7 +161,7 @@ impl<C> Api<C> for Server<C> where C: Has<XSpanIdString> + Send + Sync
         context: &C) -> Result<GetStructuredYamlResponse, ApiError>
     {
         info!("get_structured_yaml() - X-Span-ID: {:?}", context.get().0.clone());
-        Err(ApiError("Generic failure".into()))
+        Err(ApiError("Api-Error: Operation is NOT implemented".into()))
     }
 
     /// Test HTML handling
@@ -161,7 +171,7 @@ impl<C> Api<C> for Server<C> where C: Has<XSpanIdString> + Send + Sync
         context: &C) -> Result<HtmlPostResponse, ApiError>
     {
         info!("html_post(\"{}\") - X-Span-ID: {:?}", body, context.get().0.clone());
-        Err(ApiError("Generic failure".into()))
+        Err(ApiError("Api-Error: Operation is NOT implemented".into()))
     }
 
     async fn post_yaml(
@@ -170,7 +180,7 @@ impl<C> Api<C> for Server<C> where C: Has<XSpanIdString> + Send + Sync
         context: &C) -> Result<PostYamlResponse, ApiError>
     {
         info!("post_yaml(\"{}\") - X-Span-ID: {:?}", value, context.get().0.clone());
-        Err(ApiError("Generic failure".into()))
+        Err(ApiError("Api-Error: Operation is NOT implemented".into()))
     }
 
     /// Get an arbitrary JSON blob.
@@ -179,7 +189,7 @@ impl<C> Api<C> for Server<C> where C: Has<XSpanIdString> + Send + Sync
         context: &C) -> Result<RawJsonGetResponse, ApiError>
     {
         info!("raw_json_get() - X-Span-ID: {:?}", context.get().0.clone());
-        Err(ApiError("Generic failure".into()))
+        Err(ApiError("Api-Error: Operation is NOT implemented".into()))
     }
 
     /// Send an arbitrary JSON blob
@@ -189,7 +199,7 @@ impl<C> Api<C> for Server<C> where C: Has<XSpanIdString> + Send + Sync
         context: &C) -> Result<SoloObjectPostResponse, ApiError>
     {
         info!("solo_object_post({:?}) - X-Span-ID: {:?}", value, context.get().0.clone());
-        Err(ApiError("Generic failure".into()))
+        Err(ApiError("Api-Error: Operation is NOT implemented".into()))
     }
 
 }

samples/server/petstore/rust-server/output/rust-server-test/examples/server/server_auth.rs

@@ -0,0 +1,127 @@
+use swagger::{
+    ApiError,
+    auth::{Basic, Bearer},
+    Has, 
+    XSpanIdString};
+use rust_server_test::{AuthenticationApi, Claims};
+use crate::server::Server;
+use jsonwebtoken::{decode, errors as JwtError, decode_header, DecodingKey, TokenData, Validation};
+use swagger::auth::Authorization;
+use log::{error, debug};
+
+// NOTE: Set environment variable RUST_LOG to the name of the executable (or "cargo run") to activate console logging for all loglevels.
+//     See https://docs.rs/env_logger/latest/env_logger/  for more details
+
+
+/// Get a dummy claim with full permissions (all scopes) for testing purposes
+fn full_permission_claim() -> Claims {
+        Claims {
+            sub: "tester@acme.com".to_owned(), 
+            company: "ACME".to_owned(),
+            iss: "mini-bank-IDP".to_owned(),
+            aud: "org.acme.Resource_Server".to_string(),
+            // added a very long expiry time
+            exp: 10000000000,
+            // In this example code all available Scopes are added, so the current Bearer Token gets fully authorization.
+            scopes: [
+            ].join(", ")
+        }
+}
+
+
+
+/// Extract the data from a Bearer token using the provided Key (secret) and using the HS512-algorithm in this example. 
+fn extract_token_data(token: &str, key: &[u8]) -> Result<TokenData<Claims>, JwtError::Error> {
+    
+    // Ensure that you set the correct algorithm and correct key.
+    // See https://github.com/Keats/jsonwebtoken for more information.
+    let header = decode_header(token)?;
+    let validation = {
+        let mut validation = Validation::new(header.alg);
+        validation.set_audience(&["org.acme.Resource_Server"]);
+        validation.validate_exp = true;
+        validation
+    };
+
+    let token_data = decode::<Claims>(
+        &token,
+        &DecodingKey::from_secret(key),
+        &validation,
+    )?;
+
+    Ok(token_data)
+}
+
+/// Build a swagger-Authorization based on the claims (Assuming claims have been extracted from a validated token)
+fn build_authorization(claims: Claims) -> Authorization {
+    let mut scopes = std::collections::BTreeSet::<String>::new();
+    claims
+        .scopes
+        .split(",")
+        .map(|s| s.trim())
+        .for_each(|s| {let _ = scopes.insert(s.to_string()); });
+    let scopes = swagger::auth::Scopes::Some(scopes);
+
+    Authorization{
+        subject: claims.sub, 
+        scopes, 
+        issuer: Some(claims.iss)}
+}
+
+fn get_jwt_error_string(error: JwtError::Error) -> String {
+    match error.kind() {
+        JwtError::ErrorKind::InvalidSignature => "Incorrect token signature".to_owned(),
+        JwtError::ErrorKind::InvalidAlgorithm => "The Algorithm is not correct".to_owned(),
+        JwtError::ErrorKind::ExpiredSignature => "The token has expired".to_owned(),
+        JwtError::ErrorKind::Base64(e) => format!("Base64 decode failed: {e}"),
+        JwtError::ErrorKind::Json(e) => format!("JSON decoding: {e}"),
+        JwtError::ErrorKind::Utf8(e) => format!("Invalid UTF-8: {e}"),
+        _ => error.to_string()
+    }
+}
+
+
+impl<C> AuthenticationApi for Server<C> where C: Has<XSpanIdString> + Send + Sync {
+
+    /// Implementation of the method to map a Bearer-token to an Authorization
+    fn bearer_authorization(&self, bearer: &Bearer) -> Result<Authorization, ApiError> {
+        debug!("\tAuthorizationApi: Received Bearer-token, {bearer:#?}");
+
+        match extract_token_data(&bearer.token, b"secret") {
+            Ok(auth_data) => {
+                debug!("\tUnpack auth_data as: {auth_data:#?}");
+                let authorization = build_authorization(auth_data.claims);
+                Ok(authorization)
+            },
+            Err(err) => {
+                let msg = get_jwt_error_string(err);
+                error!("Failed to unpack Bearer-token: {msg}");
+                Err(ApiError(msg))
+            }
+        }
+    }
+
+    /// Implementation of the method to map an api-key to an Authorization
+    fn apikey_authorization(&self, api_key: &str) -> Result<Authorization, ApiError> {
+        debug!("\tAuthorizationApi: Received api-key, {api_key:#?}");
+
+        // TODO: insert the logic to map received apikey to the set of claims 
+        let claims = full_permission_claim();
+
+        // and build an authorization out of it
+        Ok(build_authorization(claims))
+    }
+    
+    /// Implementation of the method to map a basic authentication (username and password) to an Authorization
+    fn basic_authorization(&self, basic: &Basic) -> Result<Authorization, ApiError> {
+        debug!("\tAuthorizationApi: Received Basic-token, {basic:#?}");
+
+        // TODO: insert the logic to map received apikey to the set of claims 
+        let claims = full_permission_claim();
+
+        // and build an authorization out of it
+        Ok(build_authorization(claims))
+    }
+
+} 
+

samples/server/petstore/rust-server/output/rust-server-test/src/auth.rs

@@ -0,0 +1,62 @@
+use std::collections::BTreeSet;
+use crate::server::Authorization;
+use serde::{Deserialize, Serialize};
+use swagger::{ApiError, auth::{Basic, Bearer}};
+
+#[derive(Debug, Serialize, Deserialize)]
+pub struct Claims {
+    pub sub: String,
+    pub iss: String,
+    pub aud: String,
+    pub company: String,
+    pub exp: u64,
+    pub scopes: String,
+}
+
+
+pub trait AuthenticationApi {
+
+    /// Method should be implemented (see example-code) to map Bearer-token to an Authorization
+    fn bearer_authorization(&self, token: &Bearer) -> Result<Authorization, ApiError>;
+
+    /// Method should be implemented (see example-code) to map ApiKey to an Authorization
+    fn apikey_authorization(&self, token: &str) -> Result<Authorization, ApiError>;
+
+    /// Method should be implemented (see example-code) to map Basic (Username:password) to an Authorization
+    fn basic_authorization(&self, basic: &Basic) -> Result<Authorization, ApiError>;
+} 
+
+// Implement it for AllowAllAuthenticator (dummy is needed, but should not used as we have Bearer authorization)
+use swagger::auth::{AllowAllAuthenticator, RcBound, Scopes};
+
+fn dummy_authorization() -> Authorization {
+    // Is called when MakeAllowAllAuthenticator is added to the stack. This is not needed as we have Bearer-authorization in the example-code.
+    // However, if you want to use it anyway this can not be unimplemented, so dummy implementation added.
+    // unimplemented!()
+    Authorization{
+        subject: "Dummmy".to_owned(),
+        scopes: Scopes::Some(BTreeSet::new()), // create an empty scope, as this should not be used
+        issuer: None
+    }
+}
+
+impl<T, RC> AuthenticationApi for AllowAllAuthenticator<T, RC>
+where
+    RC: RcBound,
+    RC::Result: Send + 'static {
+
+    /// Get method to map Bearer-token to an Authorization
+    fn bearer_authorization(&self, _token: &Bearer) -> Result<Authorization, ApiError> {
+        Ok(dummy_authorization())
+    }
+
+    /// Get method to map api-key to an Authorization
+    fn apikey_authorization(&self, _apikey: &str) -> Result<Authorization, ApiError> {
+        Ok(dummy_authorization())
+    }
+
+    /// Get method to map basic token to an Authorization
+    fn basic_authorization(&self, _basic: &Basic) -> Result<Authorization, ApiError> {
+        Ok(dummy_authorization())
+    }
+}

samples/server/petstore/rust-server/output/rust-server-test/src/context.rs

@@ -8,7 +8,8 @@ use std::marker::PhantomData;
 use std::task::{Poll, Context};
 use swagger::auth::{AuthData, Authorization, Bearer, Scopes};
 use swagger::{EmptyContext, Has, Pop, Push, XSpanIdString};
-use crate::Api;
+use crate::{Api, AuthenticationApi};
+use log::error;
 
 pub struct MakeAddContext<T, A> {
     inner: T,
@@ -89,7 +90,7 @@ impl<T, A, B, C, D, ReqBody> Service<Request<ReqBody>> for AddContext<T, A, B, C
         B: Push<Option<AuthData>, Result=C>,
         C: Push<Option<Authorization>, Result=D>,
         D: Send + 'static,
-        T: Service<(Request<ReqBody>, D)>
+        T: Service<(Request<ReqBody>, D)> + AuthenticationApi
 {
     type Error = T::Error;
     type Future = T::Future;