Adding /agent/info API to agent

Signed-off-by: Michael Peters <[email protected]>

keylime-agent/src/agent_handler.rs

@@ -0,0 +1,80 @@
+// SPDX-License-Identifier: Apache-2.0
+// Copyright 2023 Keylime Authors
+
+use crate::common::JsonWrapper;
+use crate::{tpm, Error as KeylimeError, QuoteData};
+use actix_web::{web, HttpRequest, HttpResponse, Responder};
+use base64::{engine::general_purpose, Engine as _};
+use log::*;
+use serde::{Deserialize, Serialize};
+use std::{
+    fs::{read, read_to_string},
+    io::{Read, Seek},
+};
+
+#[derive(Serialize, Deserialize, Debug, Default)]
+pub(crate) struct AgentInfo {
+    pub agent_uuid: String,
+    pub tpm_hash_alg: String,
+    pub tpm_enc_alg: String,
+    pub tpm_sign_alg: String,
+    pub ak_handle: u32,
+}
+
+// This is an Info request which gets some information about this keylime agent
+// It should return a AgentInfo object as JSON
+pub async fn info(
+    req: HttpRequest,
+    data: web::Data<QuoteData>,
+) -> impl Responder {
+    debug!("Returning agent information");
+
+    let mut info = AgentInfo {
+        agent_uuid: data.agent_uuid.clone(),
+        tpm_hash_alg: data.hash_alg.to_string(),
+        tpm_enc_alg: data.enc_alg.to_string(),
+        tpm_sign_alg: data.sign_alg.to_string(),
+        ak_handle: data.ak_handle.value(),
+    };
+
+    let response = JsonWrapper::success(info);
+    info!("GET info returning 200 response");
+    HttpResponse::Ok().json(response)
+}
+
+#[cfg(test)]
+#[cfg(feature = "testing")]
+mod tests {
+    use super::*;
+    use crate::common::API_VERSION;
+    use actix_web::{test, web, App};
+
+    #[actix_rt::test]
+    async fn test_agent_info() {
+        let mut quotedata = QuoteData::fixture().unwrap(); //#[allow_ci]
+        quotedata.hash_alg = keylime::algorithms::HashAlgorithm::Sha256;
+        quotedata.enc_alg = keylime::algorithms::EncryptionAlgorithm::Rsa;
+        quotedata.sign_alg = keylime::algorithms::SignAlgorithm::RsaSsa;
+        quotedata.agent_uuid = "DEADBEEF".to_string();
+        let data = web::Data::new(quotedata);
+        let mut app =
+            test::init_service(App::new().app_data(data.clone()).route(
+                &format!("/{API_VERSION}/agent/info"),
+                web::get().to(info),
+            ))
+            .await;
+
+        let req = test::TestRequest::get()
+            .uri(&format!("/{API_VERSION}/agent/info"))
+            .to_request();
+
+        let resp = test::call_service(&app, req).await;
+        assert!(resp.status().is_success());
+
+        let result: JsonWrapper<AgentInfo> = test::read_body_json(resp).await;
+        assert_eq!(result.results.agent_uuid.as_str(), "DEADBEEF");
+        assert_eq!(result.results.tpm_hash_alg.as_str(), "sha256");
+        assert_eq!(result.results.tpm_enc_alg.as_str(), "rsa");
+        assert_eq!(result.results.tpm_sign_alg.as_str(), "rsassa");
+    }
+}

keylime-agent/src/errors_handler.rs

@@ -20,15 +20,15 @@ pub(crate) async fn app_default(req: HttpRequest) -> impl Responder {
         http::Method::GET => {
             error = 400;
             message = format!(
-                "Not Implemented: Use /version or /{API_VERSION}/ interfaces"
+                "Not Implemented: Use /version or /{API_VERSION} interfaces"
             );
             response = HttpResponse::BadRequest()
                 .json(JsonWrapper::error(error, &message));
         }
         http::Method::POST => {
             error = 400;
             message =
-                format!("Not Implemented: Use /{API_VERSION}/ interface");
+                format!("Not Implemented: Use /{API_VERSION} interface");
             response = HttpResponse::BadRequest()
                 .json(JsonWrapper::error(error, &message));
         }
@@ -62,14 +62,15 @@ pub(crate) async fn api_default(req: HttpRequest) -> impl Responder {
     match req.head().method {
         http::Method::GET => {
             error = 400;
-            message = "Not Implemented: Use /keys/ or /quotes/ interfaces";
+            message =
+                "Not Implemented: Use /agent, /keys, or /quotes interfaces";
             response = HttpResponse::BadRequest()
                 .json(JsonWrapper::error(error, message));
         }
         http::Method::POST => {
             error = 400;
             message =
-                "Not Implemented: Use /keys/ or /notifications/ interfaces";
+                "Not Implemented: Use /keys or /notifications interfaces";
             response = HttpResponse::BadRequest()
                 .json(JsonWrapper::error(error, message));
         }
@@ -103,19 +104,19 @@ pub(crate) async fn keys_default(req: HttpRequest) -> impl Responder {
     match req.head().method {
         http::Method::GET => {
             error = 400;
-            message = "URI not supported, only /pubkey and /verify are supported for GET in /keys/ interface";
+            message = "URI not supported, only /pubkey and /verify are supported for GET in /keys interface";
             response = HttpResponse::BadRequest()
                 .json(JsonWrapper::error(error, message));
         }
         http::Method::POST => {
             error = 400;
-            message = "URI not supported, only /ukey and /vkey are supported for POST in /keys/ interface";
+            message = "URI not supported, only /ukey and /vkey are supported for POST in /keys interface";
             response = HttpResponse::BadRequest()
                 .json(JsonWrapper::error(error, message));
         }
         _ => {
             error = 405;
-            message = "Method is not supported in /keys/ interface";
+            message = "Method is not supported in /keys interface";
             response = HttpResponse::MethodNotAllowed()
                 .insert_header(http::header::Allow(vec![
                     http::Method::GET,
@@ -166,6 +167,37 @@ pub(crate) async fn quotes_default(req: HttpRequest) -> impl Responder {
     response
 }
 
+pub(crate) async fn agent_default(req: HttpRequest) -> impl Responder {
+    let error;
+    let response;
+    let message;
+
+    match req.head().method {
+        http::Method::GET => {
+            error = 400;
+            message = "URI not supported, only /info is supported for GET in /agent interface";
+            response = HttpResponse::BadRequest()
+                .json(JsonWrapper::error(error, message));
+        }
+        _ => {
+            error = 405;
+            message = "Method is not supported in /agent interface";
+            response = HttpResponse::MethodNotAllowed()
+                .insert_header(http::header::Allow(vec![http::Method::GET]))
+                .json(JsonWrapper::error(error, message));
+        }
+    };
+
+    warn!(
+        "{} returning {} response. {}",
+        req.head().method,
+        error,
+        message
+    );
+
+    response
+}
+
 pub(crate) async fn notifications_default(
     req: HttpRequest,
 ) -> impl Responder {
@@ -343,6 +375,11 @@ mod tests {
             .await
     }
 
+    #[actix_rt::test]
+    async fn test_agent_default() {
+        test_default(web::resource("/").to(agent_default), "GET").await
+    }
+
     #[derive(Serialize, Deserialize)]
     struct DummyQuery {
         param: String,

keylime-agent/src/main.rs

@@ -31,6 +31,7 @@
 //  missing_docs: there is many functions missing documentations for now
 #![allow(unused, missing_docs)]
 
+mod agent_handler;
 mod common;
 mod config;
 mod error;
@@ -861,6 +862,15 @@ async fn main() -> Result<()> {
                 )
                 .service(
                     web::scope(&format!("/{API_VERSION}"))
+                        .service(
+                            web::scope("/agent")
+                                .service(web::resource("/info").route(
+                                    web::get().to(agent_handler::info),
+                                ))
+                                .default_service(web::to(
+                                    errors_handler::agent_default,
+                                )),
+                        )
                         .service(
                             web::scope("/keys")
                                 .service(web::resource("/pubkey").route(