Fix NPE when OIDC token must be verified with the chain with OIDC ser…

…ver returning no JWKs

extensions/oidc/runtime/src/main/java/io/quarkus/oidc/OidcTenantConfig.java

@@ -194,7 +194,7 @@ public static class CertificateChain {
          * A parameter to specify the password of the truststore file if it is configured with {@link #trustStoreFile}.
          */
         @ConfigItem
-        public Optional<String> trustStorePassword;
+        public Optional<String> trustStorePassword = Optional.empty();
 
         /**
          * A parameter to specify the alias of the truststore certificate.

extensions/oidc/runtime/src/main/java/io/quarkus/oidc/runtime/DynamicVerificationKeyResolver.java

@@ -1,8 +1,10 @@
 package io.quarkus.oidc.runtime;
 
 import java.security.Key;
+import java.util.Collections;
 import java.util.List;
 import java.util.Map;
+import java.util.Set;
 import java.util.function.Function;
 
 import jakarta.enterprise.event.Observes;
@@ -24,6 +26,9 @@
 
 public class DynamicVerificationKeyResolver {
     private static final Logger LOG = Logger.getLogger(DynamicVerificationKeyResolver.class);
+    private static final Set<String> KEY_HEADERS = Set.of(HeaderParameterNames.KEY_ID,
+            HeaderParameterNames.X509_CERTIFICATE_SHA256_THUMBPRINT,
+            HeaderParameterNames.X509_CERTIFICATE_THUMBPRINT);
 
     private final OidcProviderClient client;
     private final MemoryCache<Key> cache;
@@ -46,6 +51,12 @@ public Uni<VerificationKeyResolver> resolve(TokenCredential tokenCred) {
         if (key != null) {
             return Uni.createFrom().item(new SingleKeyVerificationKeyResolver(key));
         }
+        if (chainResolverFallback != null && headers.containsKey(HeaderParameterNames.X509_CERTIFICATE_CHAIN)
+                && Collections.disjoint(KEY_HEADERS, headers.fieldNames())) {
+            // If none of the key headers is available which can be used to resolve JWK then do
+            // not try to get another JWK set but delegate to the chain resolver fallback if it is available
+            return getChainResolver();
+        }
 
         return client.getJsonWebKeySet(new OidcRequestContextProperties(
                 Map.of(OidcRequestContextProperties.TOKEN, tokenCred.getToken(),
@@ -105,9 +116,7 @@ public Uni<? extends VerificationKeyResolver> apply(JsonWebKeySet jwks) {
                         }
 
                         if (newKey == null && chainResolverFallback != null) {
-                            LOG.debug("JWK is not available, neither 'kid' nor 'x5t#S256' nor 'x5t' token headers are set,"
-                                    + " falling back to the certificate chain resolver");
-                            return Uni.createFrom().item(chainResolverFallback);
+                            return getChainResolver();
                         }
 
                         if (newKey == null) {
@@ -121,6 +130,12 @@ public Uni<? extends VerificationKeyResolver> apply(JsonWebKeySet jwks) {
                 });
     }
 
+    private Uni<VerificationKeyResolver> getChainResolver() {
+        LOG.debug("JWK is not available, neither 'kid' nor 'x5t#S256' nor 'x5t' token headers are set,"
+                + " falling back to the certificate chain resolver");
+        return Uni.createFrom().item(chainResolverFallback);
+    }
+
     private static Key getKeyWithId(JsonWebKeySet jwks, String kid) {
         if (kid != null) {
             return jwks.getKeyWithId(kid);

extensions/oidc/runtime/src/main/java/io/quarkus/oidc/runtime/OidcIdentityProvider.java

@@ -18,6 +18,7 @@
 
 import io.quarkus.oidc.AccessTokenCredential;
 import io.quarkus.oidc.IdTokenCredential;
+import io.quarkus.oidc.OIDCException;
 import io.quarkus.oidc.OidcTenantConfig;
 import io.quarkus.oidc.OidcTenantConfig.Roles.Source;
 import io.quarkus.oidc.TokenIntrospection;
@@ -98,14 +99,16 @@ protected Map<String, Object> getRequestData(TokenAuthenticationRequest request)
 
     private Uni<SecurityIdentity> authenticate(TokenAuthenticationRequest request, Map<String, Object> requestData,
             TenantConfigContext resolvedContext) {
-        if (resolvedContext.oidcConfig.publicKey.isPresent()) {
-            LOG.debug("Performing token verification with a configured public key");
-            return validateTokenWithoutOidcServer(request, resolvedContext);
+        if (resolvedContext.oidcConfig.authServerUrl.isPresent()) {
+            return validateAllTokensWithOidcServer(requestData, request, resolvedContext);
         } else if (resolvedContext.oidcConfig.getCertificateChain().trustStoreFile.isPresent()) {
             LOG.debug("Performing token verification with a public key inlined in the certificate chain");
             return validateTokenWithoutOidcServer(request, resolvedContext);
+        } else if (resolvedContext.oidcConfig.publicKey.isPresent()) {
+            LOG.debug("Performing token verification with a configured public key");
+            return validateTokenWithoutOidcServer(request, resolvedContext);
         } else {
-            return validateAllTokensWithOidcServer(requestData, request, resolvedContext);
+            return Uni.createFrom().failure(new OIDCException("Unexpected authentication request"));
         }
     }
 

extensions/oidc/runtime/src/main/java/io/quarkus/oidc/runtime/OidcProvider.java

@@ -87,8 +87,15 @@ public OidcProvider(OidcProviderClient client, OidcTenantConfig oidcConfig, Json
         this.client = client;
         this.oidcConfig = oidcConfig;
         this.tokenCustomizer = tokenCustomizer;
-        this.asymmetricKeyResolver = jwks == null ? null
-                : new JsonWebKeyResolver(jwks, oidcConfig.token.forcedJwkRefreshInterval, oidcConfig.certificateChain);
+        if (jwks != null) {
+            this.asymmetricKeyResolver = new JsonWebKeyResolver(jwks, oidcConfig.token.forcedJwkRefreshInterval,
+                    oidcConfig.certificateChain);
+        } else if (oidcConfig != null && oidcConfig.certificateChain.trustStoreFile.isPresent()) {
+            this.asymmetricKeyResolver = new CertChainPublicKeyResolver(oidcConfig.certificateChain);
+        } else {
+            this.asymmetricKeyResolver = null;
+        }
+
         if (client != null && oidcConfig != null && !oidcConfig.jwks.resolveEarly) {
             this.keyResolverProvider = new DynamicVerificationKeyResolver(client, oidcConfig);
         } else {

extensions/oidc/runtime/src/main/java/io/quarkus/oidc/runtime/providers/AzureAccessTokenCustomizer.java

@@ -10,22 +10,22 @@
 
 import io.quarkus.oidc.OIDCException;
 import io.quarkus.oidc.TokenCustomizer;
+import io.quarkus.oidc.common.runtime.OidcConstants;
 import io.quarkus.oidc.runtime.OidcUtils;
 
 @Named("azure-access-token-customizer")
 @ApplicationScoped
 public class AzureAccessTokenCustomizer implements TokenCustomizer {
-    private static final String NONCE = "nonce";
 
     @Override
     public JsonObject customizeHeaders(JsonObject headers) {
         try {
-            String nonce = headers.getString(NONCE);
+            String nonce = headers.containsKey(OidcConstants.NONCE) ? headers.getString(OidcConstants.NONCE) : null;
             if (nonce != null) {
                 byte[] nonceSha256 = OidcUtils.getSha256Digest(nonce.getBytes(StandardCharsets.UTF_8));
                 byte[] newNonceBytes = Base64.getUrlEncoder().withoutPadding().encode(nonceSha256);
                 return Json.createObjectBuilder(headers)
-                        .add(NONCE, new String(newNonceBytes, StandardCharsets.UTF_8)).build();
+                        .add(OidcConstants.NONCE, new String(newNonceBytes, StandardCharsets.UTF_8)).build();
             }
             return null;
         } catch (Exception ex) {

integration-tests/oidc-wiremock/src/main/java/io/quarkus/it/keycloak/AdminResource.java

@@ -42,7 +42,7 @@ public String adminRequiredAlgorithm() {
     @Authenticated
     @Produces(MediaType.APPLICATION_JSON)
     public String adminAzure() {
-        return "Issuer:" + ((JsonWebToken) identity.getPrincipal()).getIssuer();
+        return "Name:" + identity.getPrincipal().getName() + ",Issuer:" + ((JsonWebToken) identity.getPrincipal()).getIssuer();
     }
 
     @Path("bearer-no-introspection")

integration-tests/oidc-wiremock/src/main/java/io/quarkus/it/keycloak/CodeFlowTokenIntrospectionResource.java

@@ -4,6 +4,8 @@
 import jakarta.ws.rs.GET;
 import jakarta.ws.rs.Path;
 
+import org.eclipse.microprofile.jwt.JsonWebToken;
+
 import io.quarkus.oidc.TokenIntrospection;
 import io.quarkus.security.Authenticated;
 import io.quarkus.security.identity.SecurityIdentity;
@@ -20,6 +22,10 @@ public class CodeFlowTokenIntrospectionResource {
 
     @GET
     public String access() {
-        return identity.getPrincipal().getName() + ":" + tokenIntrospection.getUsername();
+        if (identity.getPrincipal() instanceof JsonWebToken) {
+            return identity.getPrincipal().getName();
+        } else {
+            return identity.getPrincipal().getName() + ":" + tokenIntrospection.getUsername();
+        }
     }
 }

integration-tests/oidc-wiremock/src/main/java/io/quarkus/it/keycloak/CodeFlowUserInfoResource.java

@@ -16,12 +16,15 @@
 @Authenticated
 public class CodeFlowUserInfoResource {
 
+    // UserInfo stubs are available for code flow JWT and binary access tokens and bearer JWT tokens
     @Inject
     UserInfo userInfo;
 
+    // Custom test augmentor changes Principal to use UserInfo which has a preferred `alice` name
     @Inject
     SecurityIdentity identity;
 
+    // current access token
     @Inject
     JsonWebToken accessToken;
 

integration-tests/oidc-wiremock/src/main/resources/application.properties

@@ -88,6 +88,7 @@ quarkus.oidc.bearer-user-info-github-service.client-id=quarkus-web-app
 quarkus.oidc.bearer-user-info-github-service.credentials.secret=AyM1SysPpbyDfgZld3umj1qzKObwVMkoqQ-EstJQLr_T-1qS0gZH75aKtMN3Yj0iPS4hcgUuTwjAzZr1Z9CAow
 
 quarkus.oidc.code-flow-user-info-github-cached-in-idtoken.provider=github
+quarkus.oidc.code-flow-user-info-github-cached-in-idtoken.application-type=hybrid
 quarkus.oidc.code-flow-user-info-github-cached-in-idtoken.auth-server-url=${keycloak.url}/realms/quarkus/
 quarkus.oidc.code-flow-user-info-github-cached-in-idtoken.authorization-path=/
 quarkus.oidc.code-flow-user-info-github-cached-in-idtoken.token-path=access_token_refreshed
@@ -101,6 +102,9 @@ quarkus.oidc.code-flow-user-info-github-cached-in-idtoken.authentication.verify-
 quarkus.oidc.code-flow-user-info-github-cached-in-idtoken.client-id=quarkus-web-app
 quarkus.oidc.code-flow-user-info-github-cached-in-idtoken.credentials.client-secret.value=AyM1SysPpbyDfgZld3umj1qzKObwVMkoqQ-EstJQLr_T-1qS0gZH75aKtMN3Yj0iPS4hcgUuTwjAzZr1Z9CAow
 quarkus.oidc.code-flow-user-info-github-cached-in-idtoken.credentials.client-secret.method=query
+quarkus.oidc.code-flow-user-info-github-cached-in-idtoken.certificate-chain.trust-store-file=truststore.p12
+quarkus.oidc.code-flow-user-info-github-cached-in-idtoken.certificate-chain.trust-store-password=storepassword
+quarkus.oidc.code-flow-user-info-github-cached-in-idtoken.certificate-chain.trust-store-cert-alias=fullchain
 
 
 quarkus.oidc.code-flow-token-introspection.provider=github
@@ -150,6 +154,9 @@ quarkus.oidc.bearer-azure.jwks-path=${keycloak.url}/azure/jwk
 quarkus.oidc.bearer-azure.jwks.resolve-early=false
 quarkus.oidc.bearer-azure.token.lifespan-grace=2147483647
 quarkus.oidc.bearer-azure.token.customizer-name=azure-access-token-customizer
+quarkus.oidc.bearer-azure.certificate-chain.trust-store-file=truststore.p12
+quarkus.oidc.bearer-azure.certificate-chain.trust-store-password=storepassword
+quarkus.oidc.bearer-azure.certificate-chain.trust-store-cert-alias=fullchain
 
 quarkus.oidc.bearer-role-claim-path.auth-server-url=${keycloak.url}/realms/quarkus/
 quarkus.oidc.bearer-role-claim-path.client-id=quarkus-app

integration-tests/oidc-wiremock/src/test/java/io/quarkus/it/keycloak/BearerTokenAuthorizationTest.java

@@ -65,11 +65,20 @@ public void testAccessResourceAzure() throws Exception {
         wireMockServer.stubFor(WireMock.get("/auth/azure/jwk")
                 .withHeader("Authorization", matching("Access token: " + azureToken))
                 .willReturn(WireMock.aResponse().withBody(azureJwk)));
-        RestAssured.given().auth().oauth2(azureToken)
+        //        RestAssured.given().auth().oauth2(azureToken)
+        //                .when().get("/api/admin/bearer-azure")
+        //                .then()
+        //                .statusCode(200)
+        //                .body(Matchers.equalTo(
+        //                        "Name:jondoe@quarkusoidctest.onmicrosoft.com,Issuer:https://sts.windows.net/e7861267-92c5-4a03-bdb2-2d3e491e7831/"));
+
+        String accessTokenWithCert = TestUtils.createTokenWithInlinedCertChain("alice-certificate");
+
+        RestAssured.given().auth().oauth2(accessTokenWithCert)
                 .when().get("/api/admin/bearer-azure")
                 .then()
                 .statusCode(200)
-                .body(Matchers.equalTo("Issuer:https://sts.windows.net/e7861267-92c5-4a03-bdb2-2d3e491e7831/"));
+                .body(Matchers.equalTo("Name:alice-certificate,Issuer:https://server.example.com"));
     }
 
     private String readFile(String filePath) throws Exception {
@@ -292,7 +301,7 @@ public void testAccessAdminResourceWithKidOrChain() throws Exception {
                 List.of(subjectCert, intermediateCert, rootCert),
                 subjectPrivateKey);
 
-        assertX5cOnlyIsPresent(token);
+        TestUtils.assertX5cOnlyIsPresent(token);
 
         RestAssured.given().auth().oauth2(token)
                 .when().get("/api/admin/bearer-kid-or-chain")
@@ -311,7 +320,7 @@ public void testAccessAdminResourceWithKidOrChain() throws Exception {
                 List.of(intermediateCert, subjectCert, rootCert),
                 subjectPrivateKey);
 
-        assertX5cOnlyIsPresent(token);
+        TestUtils.assertX5cOnlyIsPresent(token);
 
         RestAssured.given().auth().oauth2(token)
                 .when().get("/api/admin/bearer-kid-or-chain")
@@ -364,14 +373,6 @@ private void assertKidOnlyIsPresent(String token, String kid) {
         assertFalse(headers.containsKey("x5t#S256"));
     }
 
-    private void assertX5cOnlyIsPresent(String token) {
-        JsonObject headers = OidcUtils.decodeJwtHeaders(token);
-        assertTrue(headers.containsKey("x5c"));
-        assertFalse(headers.containsKey("kid"));
-        assertFalse(headers.containsKey("x5t"));
-        assertFalse(headers.containsKey("x5t#S256"));
-    }
-
     @Test
     public void testAccessAdminResourceWithCustomRolePathForbidden() {
         RestAssured.given().auth().oauth2(getAccessTokenWithCustomRolePath("admin", Set.of("admin")))

integration-tests/oidc-wiremock/src/test/java/io/quarkus/it/keycloak/CodeFlowAuthorizationTest.java

@@ -8,6 +8,7 @@
 import static com.github.tomakehurst.wiremock.client.WireMock.matching;
 import static com.github.tomakehurst.wiremock.client.WireMock.notContaining;
 import static com.github.tomakehurst.wiremock.client.WireMock.urlPathMatching;
+import static org.hamcrest.Matchers.equalTo;
 import static org.junit.jupiter.api.Assertions.assertEquals;
 import static org.junit.jupiter.api.Assertions.assertNotNull;
 import static org.junit.jupiter.api.Assertions.assertNull;
@@ -23,6 +24,7 @@
 import javax.crypto.SecretKey;
 import javax.crypto.spec.SecretKeySpec;
 
+import org.hamcrest.Matchers;
 import org.junit.jupiter.api.BeforeAll;
 import org.junit.jupiter.api.Test;
 
@@ -271,6 +273,16 @@ public void testCodeFlowUserInfoCachedInIdToken() throws Exception {
 
             webClient.getCookieManager().clearCookies();
         }
+
+        // Now send a bearer access token with the inline chain
+        String bearerAccessToken = TestUtils.createTokenWithInlinedCertChain("alice-certificate");
+
+        RestAssured.given().auth().oauth2(bearerAccessToken)
+                .when().get("/code-flow-user-info-github-cached-in-idtoken")
+                .then()
+                .statusCode(200)
+                .body(Matchers.equalTo("alice:alice:alice-certificate, cache size: 0"));
+
         clearCache();
     }
 
@@ -296,6 +308,7 @@ public void testCodeFlowTokenIntrospection() throws Exception {
 
             webClient.getCookieManager().clearCookies();
         }
+
         clearCache();
     }
 

integration-tests/oidc-wiremock/src/test/java/io/quarkus/it/keycloak/TestUtils.java

@@ -0,0 +1,51 @@
+package io.quarkus.it.keycloak;
+
+import static org.junit.jupiter.api.Assertions.assertFalse;
+import static org.junit.jupiter.api.Assertions.assertTrue;
+
+import java.security.PrivateKey;
+import java.security.cert.X509Certificate;
+import java.util.List;
+
+import io.quarkus.oidc.runtime.OidcUtils;
+import io.smallrye.jwt.build.Jwt;
+import io.smallrye.jwt.util.KeyUtils;
+import io.smallrye.jwt.util.ResourceUtils;
+import io.vertx.core.json.JsonObject;
+
+public class TestUtils {
+
+    public static String createTokenWithInlinedCertChain(String preferredUserName) throws Exception {
+        X509Certificate rootCert = KeyUtils.getCertificate(ResourceUtils.readResource("/ca.cert.pem"));
+        X509Certificate intermediateCert = KeyUtils.getCertificate(ResourceUtils.readResource("/intermediate.cert.pem"));
+        X509Certificate subjectCert = KeyUtils.getCertificate(ResourceUtils.readResource("/www.quarkustest.com.cert.pem"));
+        PrivateKey subjectPrivateKey = KeyUtils.readPrivateKey("/www.quarkustest.com.key.pem");
+
+        String bearerAccessToken = getAccessTokenWithCertChain(
+                List.of(subjectCert, intermediateCert, rootCert),
+                subjectPrivateKey,
+                preferredUserName);
+
+        assertX5cOnlyIsPresent(bearerAccessToken);
+        return bearerAccessToken;
+    }
+
+    public static String getAccessTokenWithCertChain(List<X509Certificate> chain,
+            PrivateKey privateKey, String preferredUserName) throws Exception {
+        return Jwt.preferredUserName(preferredUserName)
+                .groups("admin")
+                .issuer("https://server.example.com")
+                .audience("https://service.example.com")
+                .jws().chain(chain)
+                .sign(privateKey);
+    }
+
+    public static void assertX5cOnlyIsPresent(String token) {
+        JsonObject headers = OidcUtils.decodeJwtHeaders(token);
+        assertTrue(headers.containsKey("x5c"));
+        assertFalse(headers.containsKey("kid"));
+        assertFalse(headers.containsKey("x5t"));
+        assertFalse(headers.containsKey("x5t#S256"));
+    }
+
+}