[TLS Registry] provide a TLS configuration called javax.net.ssl havin…

…g truststore set in the same way as default SunJSSE provider, fix quarkusio#45175

docs/src/main/asciidoc/tls-registry-reference.adoc

@@ -183,6 +183,41 @@ certificate. Dynamic clients are `@Dependent` scoped, so you should
 inject them into components with an appropriate scope.
 ====
 
+=== Referencing the default truststore of SunJSSE
+
+JDK distributions typically contain a truststore in the `$JAVA_HOME/lib/security/cacerts` file.
+It is used as a default truststore by SunJSSE, the default implementation of Java Secure Socket Extension (JSSE).
+SSL/TLS capabilities provided by SunJSSE are leveraged by various Java Runtime components,
+such as `javax.net.ssl.HttpsURLConnection` and others.
+
+Although Quarkus extensions typically do not honor the default truststore of SunJSSE,
+it might still be practical to use it in some situations - be it migration from legacy technologies
+or when running on a Linux distribution where the SunJSSE truststore is synchronized with the operating system truststore.
+
+To make the use of SunJSSE truststore easier, Quarkus TLS Registry provides a TLS configuration
+under the name `javax.net.ssl` that mimics the default behavior of SunJSSE:
+
+. If the `javax.net.ssl.trustStore` system property is defined, then its value is honored as a truststore
+. Otherwise, the paths `$JAVA_HOME/lib/security/jssecacerts` and `$JAVA_HOME/lib/security/cacerts` are checked
+  and the first existing file is used as a truststore
+. Otherwise an `IllegalStateException` is thrown.
+
+The password for opening the truststore is taken from the `javax.net.ssl.trustStorePassword` system property.
+If it is not set, the default password `changeit` is used.
+
+`javax.net.ssl` can be used as a value for various `*.tls-configuration-name` properties, for example:
+
+.Example configuration for a gRPC client:
+[source,properties]
+----
+quarkus.grpc.clients.hello.tls-configuration-name=javax.net.ssl
+----
+
+[WARNING]
+====
+The `javax.net.ssl` TLS configuration can be neither customized nor overridden.
+====
+
 == Configuring TLS
 
 TLS configuration primarily involves managing keystores and truststores.
@@ -248,15 +283,15 @@ quarkus.tls.http.key-store.pem.password=password
 PKCS12 keystores are single files that contain the certificate and the private key.
 
 To configure a PKCS12 keystore:
- 
+
 [source,properties]
 ----
 quarkus.tls.key-store.p12.path=server-keystore.p12
 quarkus.tls.key-store.p12.password=secret
 ----
- 
+
 `.p12` files are password-protected, so you need to provide the password to open the keystore.
- 
+
 These files can include more than one certificate and private key.
 If this is the case, take either of the following actions:
 
@@ -292,11 +327,11 @@ To configure a JKS keystore:
 quarkus.tls.key-store.jks.path=server-keystore.jks
 quarkus.tls.key-store.jks.password=secret
 ----
- 
+
 `.jks` files are password-protected, so you need to provide the password to open the keystore.
 Also, they can include more than one certificate and private key.
 If this is the case:
- 
+
 * Provide and configure the alias of the certificate and the private key you want to use:
 +
 [source,properties]
@@ -317,12 +352,12 @@ Server Name Indication (SNI) is a TLS extension that makes it possible for a cli
 SNI enables a server to present different TLS certificates for multiple domains on a single IP address, which facilitates secure communication for virtual hosting scenarios.
 
 To enable SNI:
- 
+
 [source,properties]
 ----
 quarkus.tls.key-store.sni=true # Disabled by default
 ----
- 
+
 With SNI enabled, the client indicates the server name during the TLS handshake, which allows the server to select the appropriate certificate:
 
 * When configuring the keystore with PEM files, multiple certificate (CRT) and key files must be provided.
@@ -390,7 +425,7 @@ quarkus.tls.trust-store.p12.path=client-truststore.p12
 quarkus.tls.trust-store.p12.password=password
 quarkus.tls.trust-store.p12.alias=my-alias
 ----
- 
+
 `.p12` files are password-protected, so you need to provide the password to open the truststore.
 However, unlike keystores, the alias does not require a password because it contains a public certificate, not a private key.
 
@@ -408,7 +443,7 @@ quarkus.tls.trust-store.jks.path=client-truststore.jks
 quarkus.tls.trust-store.jks.password=password
 quarkus.tls.trust-store.jks.alias=my-alias
 ----
- 
+
 `.jks` files are password-protected, so you need to provide the password to open the truststore.
 However, unlike keystores, the alias does not require a password because it contains a public certificate, not a private key.
 
@@ -432,7 +467,7 @@ quarkus.tls.trust-store.credentials-provider.bean-name=my-credentials-provider
 # The key used to retrieve the truststore password, `password` by default
 quarkus.tls.trust-store.credentials-provider.password-key=password
 ----
- 
+
 IMPORTANT: The credential provider can only be used with PKCS12 and JKS truststores.
 
 === Other properties
@@ -562,7 +597,7 @@ While extensions automatically use the TLS registry, you can also access the TLS
 
 To access the TLS configuration, inject the `TlsConfigurationRegistry` bean.
 You can retrieve a named TLS configuration by calling `get("<NAME>")` or the default configuration by calling `getDefault()`.
- 
+
 [source,java]
 ----
  @Inject
@@ -572,7 +607,7 @@ TlsConfiguration def = certificates.getDefault().orElseThrow();
 TlsConfiguration named = certificates.get("name").orElseThrow();
 //...
 ----
- 
+
 The `TlsConfiguration` object contains the keystores, truststores, cipher suites, protocols, and other properties.
 It also provides a way to create an `SSLContext` from the configuration.
 
@@ -591,9 +626,9 @@ To register a certificate in the TLS registry by using the extension, the _proce
 TlsCertificateBuildItem item = new TlsCertificateBuildItem("named",
     new MyCertificateSupplier());
 ----
- 
+
 The certificate supplier is a runtime object generally retrieved by using a recorder method.
- 
+
 .An example of a certificate supplier:
 [source,java]
 ----
@@ -937,7 +972,7 @@ Ensure that the path matches the one used in the configuration (here `/etc/tls`)
 . Deploy your application to use the certificate generated by OpenShift.
 This will make the service available over HTTPS.
 
-[NOTE] 
+[NOTE]
 ====
 By setting the `quarkus.tls.key-store.pem.acme.cert` and `quarkus.tls.key-store.pem.acme.key` variables or their environment variable variant, the TLS registry will use the certificate and private key from the secret.
 
@@ -1209,7 +1244,7 @@ Even if the Quarkus Development CA is installed, you can generate a self-signed
 ----
 quarkus tls generate-certificate --name my-cert --self-signed
 ----
- 
+
 This generates a self-signed certificate that the Quarkus Development CA does not sign.
 
 === Uninstalling the Quarkus Development CA

extensions/tls-registry/deployment/src/test/java/io/quarkus/tls/JavaNetSslTlsBucketConfigTest.java

@@ -0,0 +1,91 @@
+package io.quarkus.tls;
+
+import static org.assertj.core.api.Assertions.assertThat;
+
+import java.io.IOException;
+import java.security.KeyStore;
+import java.security.KeyStoreException;
+import java.security.NoSuchAlgorithmException;
+import java.security.cert.CertificateException;
+import java.security.cert.X509Certificate;
+import java.util.Collections;
+import java.util.List;
+import java.util.stream.Collectors;
+import java.util.stream.Stream;
+
+import javax.net.ssl.TrustManagerFactory;
+import javax.net.ssl.X509TrustManager;
+
+import jakarta.inject.Inject;
+
+import org.jboss.shrinkwrap.api.ShrinkWrap;
+import org.jboss.shrinkwrap.api.spec.JavaArchive;
+import org.junit.jupiter.api.Test;
+import org.junit.jupiter.api.extension.RegisterExtension;
+
+import io.quarkus.test.QuarkusUnitTest;
+import io.smallrye.certs.Format;
+import io.smallrye.certs.junit5.Certificate;
+import io.smallrye.certs.junit5.Certificates;
+
+@Certificates(baseDir = "target/certs", certificates = {
+        @Certificate(name = "test-formats", password = "password", formats = { Format.JKS, Format.PEM, Format.PKCS12 })
+})
+public class JavaNetSslTlsBucketConfigTest {
+
+    @RegisterExtension
+    static final QuarkusUnitTest config = new QuarkusUnitTest().setArchiveProducer(
+            () -> ShrinkWrap.create(JavaArchive.class));
+
+    @Inject
+    TlsConfigurationRegistry certificates;
+
+    @Test
+    void test() throws KeyStoreException, IOException, NoSuchAlgorithmException, CertificateException {
+        TlsConfiguration def = certificates.get("javax.net.ssl").orElseThrow();
+
+        assertThat(def.getTrustStoreOptions()).isNotNull();
+        final KeyStore actualTs = def.getTrustStore();
+        assertThat(actualTs).isNotNull();
+
+        /*
+         * Get the default trust managers, one of which should be SunJSSE based,
+         * which in turn should use the same default trust store lookup algo
+         * like we do in io.quarkus.tls.runtime.JavaNetSslTlsBucketConfig.defaultTrustStorePath()
+         */
+        final TrustManagerFactory trustManagerFactory = TrustManagerFactory
+                .getInstance(TrustManagerFactory.getDefaultAlgorithm());
+        trustManagerFactory.init((KeyStore) null);
+        final List<X509TrustManager> defaultTrustManagers = Stream.of(trustManagerFactory.getTrustManagers())
+                .filter(m -> m instanceof X509TrustManager)
+                .map(m -> (X509TrustManager) m)
+                .collect(Collectors.toList());
+        assertThat(defaultTrustManagers).hasSizeGreaterThan(0);
+
+        final List<String> actualAliases = Collections.list(actualTs.aliases());
+        assertThat(actualAliases).hasSizeGreaterThan(0);
+
+        for (String alias : actualAliases) {
+            /*
+             * Get the certs from the trust store loaded by us from $JAVA_HOME/lib/security/cacerts or similar
+             * and validate those against the default trust managers.
+             * In that way we make sure indirectly that we have loaded some valid trust material.
+             */
+            final X509Certificate cert = (X509Certificate) actualTs.getCertificate(alias);
+            CertificateException lastException = null;
+            boolean passed = false;
+            for (X509TrustManager tm : defaultTrustManagers) {
+                try {
+                    tm.checkServerTrusted(new X509Certificate[] { cert }, "RSA");
+                    passed = true;
+                    break;
+                } catch (CertificateException e) {
+                    lastException = e;
+                }
+            }
+            if (!passed && lastException != null) {
+                throw lastException;
+            }
+        }
+    }
+}

extensions/tls-registry/runtime/src/main/java/io/quarkus/tls/runtime/CertificateRecorder.java

@@ -27,6 +27,7 @@ public class CertificateRecorder implements TlsConfigurationRegistry {
 
     private final Map<String, TlsConfiguration> certificates = new ConcurrentHashMap<>();
     private volatile TlsCertificateUpdater reloader;
+    private volatile Vertx vertx;
 
     /**
      * Validate the certificate configuration.
@@ -38,6 +39,7 @@ public class CertificateRecorder implements TlsConfigurationRegistry {
      * @param vertx the Vert.x instance
      */
     public void validateCertificates(TlsConfig config, RuntimeValue<Vertx> vertx, ShutdownContext shutdownContext) {
+        this.vertx = vertx.getValue();
         // Verify the default config
         if (config.defaultCertificateConfig().isPresent()) {
             verifyCertificateConfig(config.defaultCertificateConfig().get(), vertx.getValue(), TlsConfig.DEFAULT_NAME);
@@ -59,6 +61,24 @@ public void run() {
     }
 
     public void verifyCertificateConfig(TlsBucketConfig config, Vertx vertx, String name) {
+        if (name.equals(TlsConfig.JAVA_NET_SSL_TLS_CONFIGURATION_NAME)) {
+            throw new IllegalArgumentException(
+                    "The TLS configuration name " + TlsConfig.JAVA_NET_SSL_TLS_CONFIGURATION_NAME
+                            + " is reserved for providing access to default SunJSSE keystore; neither Quarkus extensions nor end users can adjust of override it");
+        }
+        final TlsConfiguration tlsConfig = verifyCertificateConfigInternal(config, vertx, name);
+        certificates.put(name, tlsConfig);
+
+        // Handle reloading if needed
+        if (config.reloadPeriod().isPresent()) {
+            if (reloader == null) {
+                reloader = new TlsCertificateUpdater(vertx);
+            }
+            reloader.add(name, certificates.get(name), config.reloadPeriod().get());
+        }
+    }
+
+    private static TlsConfiguration verifyCertificateConfigInternal(TlsBucketConfig config, Vertx vertx, String name) {
         // Verify the key store
         KeyStoreAndKeyCertOptions ks = null;
         boolean sni;
@@ -90,16 +110,7 @@ public void verifyCertificateConfig(TlsBucketConfig config, Vertx vertx, String
         } else if (config.trustAll()) {
             ts = new TrustStoreAndTrustOptions(null, TrustAllOptions.INSTANCE);
         }
-
-        certificates.put(name, new VertxCertificateHolder(vertx, name, config, ks, ts));
-
-        // Handle reloading if needed
-        if (config.reloadPeriod().isPresent()) {
-            if (reloader == null) {
-                reloader = new TlsCertificateUpdater(vertx);
-            }
-            reloader.add(name, certificates.get(name), config.reloadPeriod().get());
-        }
+        return new VertxCertificateHolder(vertx, name, config, ks, ts);
     }
 
     public static KeyStoreAndKeyCertOptions verifyKeyStore(KeyStoreConfig config, Vertx vertx, String name) {
@@ -131,6 +142,13 @@ public static TrustStoreAndTrustOptions verifyTrustStore(TrustStoreConfig config
 
     @Override
     public Optional<TlsConfiguration> get(String name) {
+        if (TlsConfig.JAVA_NET_SSL_TLS_CONFIGURATION_NAME.equals(name)) {
+            final TlsConfiguration result = certificates.computeIfAbsent(TlsConfig.JAVA_NET_SSL_TLS_CONFIGURATION_NAME, k -> {
+                return verifyCertificateConfigInternal(new JavaNetSslTlsBucketConfig(), vertx,
+                        TlsConfig.JAVA_NET_SSL_TLS_CONFIGURATION_NAME);
+            });
+            return Optional.ofNullable(result);
+        }
         return Optional.ofNullable(certificates.get(name));
     }
 
@@ -147,6 +165,11 @@ public void register(String name, TlsConfiguration configuration) {
         if (name.equals(TlsConfig.DEFAULT_NAME)) {
             throw new IllegalArgumentException("The name of the TLS configuration to register cannot be <default>");
         }
+        if (name.equals(TlsConfig.JAVA_NET_SSL_TLS_CONFIGURATION_NAME)) {
+            throw new IllegalArgumentException(
+                    "The TLS configuration name " + TlsConfig.JAVA_NET_SSL_TLS_CONFIGURATION_NAME
+                            + " is reserved for providing access to default SunJSSE keystore; neither Quarkus extensions nor end users can adjust of override it");
+        }
         if (configuration == null) {
             throw new IllegalArgumentException("The TLS configuration to register cannot be null");
         }