Avoid creating CSRF cookie if no CSRF token was created

extensions/csrf-reactive/runtime/src/main/java/io/quarkus/csrf/reactive/runtime/CsrfRequestResponseReactiveFilter.java

@@ -179,16 +179,18 @@ && getCookieToken(routing, config) == null) {
                 byte[] csrfTokenBytes = (byte[]) routing.get(CSRF_TOKEN_BYTES_KEY);
 
                 if (csrfTokenBytes == null) {
-                    throw new IllegalStateException(
-                            "CSRF Filter should have set the property " + CSRF_TOKEN_KEY + ", but it is null");
+                    LOG.debug("CSRF Request Filter did not set the property " + CSRF_TOKEN_BYTES_KEY
+                            + ", no CSRF cookie will be created");
+                    return;
                 }
                 cookieValue = CsrfTokenUtils.signCsrfToken(csrfTokenBytes, config.tokenSignatureKey.get());
             } else {
                 String csrfToken = (String) routing.get(CSRF_TOKEN_KEY);
 
                 if (csrfToken == null) {
-                    throw new IllegalStateException(
-                            "CSRF Filter should have set the property " + CSRF_TOKEN_KEY + ", but it is null");
+                    LOG.debug("CSRF Request Filter did not set the property " + CSRF_TOKEN_KEY
+                            + ", no CSRF cookie will be created");
+                    return;
                 }
                 cookieValue = csrfToken;
             }

integration-tests/csrf-reactive/pom.xml

@@ -19,6 +19,10 @@
             <groupId>io.quarkus</groupId>
             <artifactId>quarkus-csrf-reactive</artifactId>
         </dependency>
+        <dependency>
+            <groupId>io.quarkus</groupId>
+            <artifactId>quarkus-elytron-security-properties-file</artifactId>
+        </dependency>
         <dependency>
             <groupId>io.quarkus</groupId>
             <artifactId>quarkus-junit5</artifactId>
@@ -47,6 +51,19 @@
                 </exclusion>
             </exclusions>
         </dependency>
+        <dependency>
+            <groupId>io.quarkus</groupId>
+            <artifactId>quarkus-elytron-security-properties-file-deployment</artifactId>
+            <version>${project.version}</version>
+            <type>pom</type>
+            <scope>test</scope>
+            <exclusions>
+                <exclusion>
+                    <groupId>*</groupId>
+                    <artifactId>*</artifactId>
+                </exclusion>
+            </exclusions>
+        </dependency>
     </dependencies>
 
     <build>

integration-tests/csrf-reactive/src/main/java/io/quarkus/it/csrf/TestExceptionMapper.java

@@ -0,0 +1,17 @@
+package io.quarkus.it.csrf;
+
+import jakarta.ws.rs.core.Response;
+import jakarta.ws.rs.ext.ExceptionMapper;
+import jakarta.ws.rs.ext.Provider;
+
+import io.quarkus.security.AuthenticationFailedException;
+
+@Provider
+public class TestExceptionMapper implements ExceptionMapper<AuthenticationFailedException> {
+
+    @Override
+    public Response toResponse(AuthenticationFailedException exception) {
+        return Response.status(401).header("test-mapper", "true").build();
+    }
+
+}

integration-tests/csrf-reactive/src/main/java/io/quarkus/it/csrf/TestResource.java

@@ -19,6 +19,7 @@
 import io.quarkus.csrf.reactive.runtime.CsrfTokenUtils;
 import io.quarkus.qute.Template;
 import io.quarkus.qute.TemplateInstance;
+import io.quarkus.security.Authenticated;
 import io.vertx.ext.web.RoutingContext;
 
 @Path("/service")
@@ -39,6 +40,7 @@ public class TestResource {
     @GET
     @Path("/csrfTokenForm")
     @Produces(MediaType.TEXT_HTML)
+    @Authenticated
     public TemplateInstance getCsrfTokenForm() {
         return csrfTokenForm.instance();
     }

integration-tests/csrf-reactive/src/main/resources/application.properties

@@ -2,3 +2,8 @@ quarkus.csrf-reactive.cookie-name=csrftoken
 quarkus.csrf-reactive.create-token-path=/service/csrfTokenForm,/service/csrfTokenWithFormRead,/service/csrfTokenMultipart
 quarkus.csrf-reactive.token-signature-key=AyM1SysPpbyDfgZld3umj1qzKObwVMkoqQ-EstJQLr_T-1qS0gZH75aKtMN3Yj0iPS4hcgUuTwjAzZr1Z9CAow
 
+quarkus.http.auth.basic=true
+quarkus.security.users.embedded.enabled=true
+quarkus.security.users.embedded.plain-text=true
+quarkus.security.users.embedded.users.alice=alice
+quarkus.security.users.embedded.roles.alice=admin

integration-tests/csrf-reactive/src/test/java/io/quarkus/it/csrf/CsrfReactiveTest.java

@@ -5,6 +5,8 @@
 import static org.junit.jupiter.api.Assertions.assertNull;
 import static org.junit.jupiter.api.Assertions.fail;
 
+import java.util.Base64;
+
 import org.junit.jupiter.api.Test;
 
 import com.gargoylesoftware.htmlunit.FailingHttpStatusCodeException;
@@ -24,7 +26,7 @@ public class CsrfReactiveTest {
     @Test
     public void testCsrfTokenInForm() throws Exception {
         try (final WebClient webClient = createWebClient()) {
-
+            webClient.addRequestHeader("Authorization", basicAuth("alice", "alice"));
             HtmlPage htmlPage = webClient.getPage("http://localhost:8081/service/csrfTokenForm");
 
             assertEquals("CSRF Token Form Test", htmlPage.getTitleText());
@@ -74,7 +76,7 @@ public void testCsrfTokenWithFormRead() throws Exception {
     @Test
     public void testCsrfTokenInFormButNoCookie() throws Exception {
         try (final WebClient webClient = createWebClient()) {
-
+            webClient.addRequestHeader("Authorization", basicAuth("alice", "alice"));
             HtmlPage htmlPage = webClient.getPage("http://localhost:8081/service/csrfTokenForm");
 
             assertEquals("CSRF Token Form Test", htmlPage.getTitleText());
@@ -98,6 +100,21 @@ public void testCsrfTokenInFormButNoCookie() throws Exception {
         }
     }
 
+    public void testCsrfFailedAuthentication() throws Exception {
+        try (final WebClient webClient = createWebClient()) {
+            webClient.addRequestHeader("Authorization", basicAuth("alice", "password"));
+            try {
+                webClient.getPage("http://localhost:8081/service/csrfTokenForm");
+                fail("401 status error is expected");
+            } catch (FailingHttpStatusCodeException ex) {
+                assertEquals(401, ex.getStatusCode());
+                assertEquals("true", ex.getResponse().getResponseHeaderValue("test-mapper"));
+                assertNull(webClient.getCookieManager().getCookie("csrftoken"));
+            }
+            webClient.getCookieManager().clearCookies();
+        }
+    }
+
     @Test
     public void testCsrfTokenInMultipart() throws Exception {
         try (final WebClient webClient = createWebClient()) {
@@ -127,7 +144,7 @@ public void testCsrfTokenInMultipart() throws Exception {
     @Test
     public void testWrongCsrfTokenCookieValue() throws Exception {
         try (final WebClient webClient = createWebClient()) {
-
+            webClient.addRequestHeader("Authorization", basicAuth("alice", "alice"));
             HtmlPage htmlPage = webClient.getPage("http://localhost:8081/service/csrfTokenForm");
 
             assertEquals("CSRF Token Form Test", htmlPage.getTitleText());
@@ -157,7 +174,7 @@ public void testWrongCsrfTokenCookieValue() throws Exception {
     @Test
     public void testWrongCsrfTokenFormValue() throws Exception {
         try (final WebClient webClient = createWebClient()) {
-
+            webClient.addRequestHeader("Authorization", basicAuth("alice", "alice"));
             HtmlPage htmlPage = webClient.getPage("http://localhost:8081/service/csrfTokenForm");
 
             assertEquals("CSRF Token Form Test", htmlPage.getTitleText());
@@ -197,4 +214,8 @@ private WebClient createWebClient() {
         webClient.setCssErrorHandler(new SilentCssErrorHandler());
         return webClient;
     }
+
+    private String basicAuth(String user, String password) {
+        return "Basic " + Base64.getEncoder().encodeToString((user + ":" + password).getBytes());
+    }
 }