fix implemented

Author: AlbaLopez552

build.gradle

@@ -10,7 +10,7 @@ plugins {
 }
 
 group = 'es.in2'
-version = '2.0.0'
+version = '2.0.1'
 
 java {
 	toolchain {

src/main/java/es/in2/vcverifier/model/AuthorizationContext.java

@@ -9,6 +9,8 @@ public record AuthorizationContext(
         String redirectUri,
         String clientNonce,
         String originalRequestURL,
-        String requestUri
+        String requestUri,
+        String codeChallenge,
+        String codeChallengeMethod
 ) {
 }

src/main/java/es/in2/vcverifier/security/filters/CustomAuthorizationRequestConverter.java

@@ -20,6 +20,7 @@
 import org.springframework.security.oauth2.core.OAuth2ErrorCodes;
 import org.springframework.security.oauth2.core.endpoint.OAuth2AuthorizationRequest;
 import org.springframework.security.oauth2.core.endpoint.OAuth2ParameterNames;
+import org.springframework.security.oauth2.core.endpoint.PkceParameterNames;
 import org.springframework.security.oauth2.server.authorization.authentication.OAuth2AuthorizationCodeRequestAuthenticationException;
 import org.springframework.security.oauth2.server.authorization.client.RegisteredClient;
 import org.springframework.security.oauth2.server.authorization.client.RegisteredClientRepository;
@@ -72,13 +73,18 @@ public Authentication convert(HttpServletRequest request) {
         String scope = request.getParameter(OAuth2ParameterNames.SCOPE);
         String redirectUri = request.getParameter(OAuth2ParameterNames.REDIRECT_URI);
         String clientNonce = request.getParameter(NONCE);
+        String codeChallenge      = request.getParameter(PkceParameterNames.CODE_CHALLENGE);
+        String codeChallengeMethod= request.getParameter(PkceParameterNames.CODE_CHALLENGE_METHOD);
+
         AuthorizationContext authorizationContext = AuthorizationContext.builder()
                 .requestUri(requestUri)
                 .state(state)
                 .originalRequestURL(originalRequestURL)
                 .redirectUri(redirectUri)
                 .clientNonce(clientNonce)
                 .scope(scope)
+                .codeChallenge(codeChallenge)
+                .codeChallengeMethod(codeChallengeMethod)
                 .build();
 
         RegisteredClient registeredClient = registeredClientRepository.findByClientId(clientId);
@@ -482,10 +488,14 @@ private void cacheAuthorizationRequest(AuthorizationContext authorizationContext
         if (nonce != null && !nonce.isBlank()) {
             additionalParameters.put(NONCE, nonce);
         }
+        if (authorizationContext.codeChallenge() != null && !authorizationContext.codeChallenge().isBlank()) {
+            additionalParameters.put(PkceParameterNames.CODE_CHALLENGE, authorizationContext.codeChallenge());
+        }
+        if (authorizationContext.codeChallengeMethod() != null && !authorizationContext.codeChallengeMethod().isBlank()) {
+            additionalParameters.put(PkceParameterNames.CODE_CHALLENGE_METHOD, authorizationContext.codeChallengeMethod());
+        }
         builder.additionalParameters(additionalParameters);
 
-
-
         // Build the request
         OAuth2AuthorizationRequest oAuth2AuthorizationRequest = builder.build();