Initialize security providers at run time.

Author: jovanstevanovic

substratevm/mx.substratevm/suite.py

@@ -296,9 +296,12 @@
                     "sun.reflect.generics.reflectiveObjects",
                     "sun.reflect.generics.repository",
                     "sun.reflect.generics.tree",
+                    "sun.security.rsa",
                     "sun.security.jca",
                     "sun.security.ssl",
                     "sun.security.util",
+                    "sun.security.provider",
+                    "com.sun.crypto.provider",
                     "sun.text.spi",
                     "sun.util",
                     "sun.util.locale",

substratevm/src/com.oracle.svm.core/src/com/oracle/svm/core/jdk/SecurityProvidersSupport.java

@@ -0,0 +1,129 @@
+/*
+ * Copyright (c) 2024, 2024, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.  Oracle designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Oracle in the LICENSE file that accompanied this code.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+package com.oracle.svm.core.jdk;
+
+import java.lang.reflect.Constructor;
+import java.lang.reflect.InvocationTargetException;
+import java.security.Provider;
+import java.util.Collections;
+import java.util.HashMap;
+import java.util.HashSet;
+import java.util.List;
+import java.util.Map;
+import java.util.Set;
+
+import org.graalvm.nativeimage.ImageSingletons;
+import org.graalvm.nativeimage.Platform;
+import org.graalvm.nativeimage.Platforms;
+
+import com.oracle.svm.core.util.VMError;
+
+import jdk.graal.compiler.api.replacements.Fold;
+
+/**
+ * The class that holds various build-time and runtime structures necessary for security providers.
+ */
+public final class SecurityProvidersSupport {
+    /**
+     * A set of providers to be loaded using the service-loading technique at runtime, but not
+     * discoverable at build-time when processing services in the feature (see
+     * ServiceLoaderFeature#handleServiceClassIsReachable). This occurs when the user does not
+     * explicitly request a provider, but the provider is discovered via static analysis from a
+     * JCA-compliant security service used by the user's code (see
+     * SecurityServicesFeature#registerServiceReachabilityHandlers).
+     */
+    @Platforms(Platform.HOSTED_ONLY.class)//
+    private final Set<String> markedAsNotLoaded = Collections.synchronizedSet(new HashSet<>());
+
+    /** Set of fully qualified provider names, required for runtime resource access. */
+    private final Set<String> userRequestedSecurityProviders = Collections.synchronizedSet(new HashSet<>());
+
+    /**
+     * A map of providers, identified by their names (see {@link Provider#getName()}), and the
+     * results of their verification (see javax.crypto.JceSecurity#getVerificationResult). This
+     * structure is used instead of the (see javax.crypto.JceSecurity#verifyingProviders) map to
+     * avoid keeping provider objects in the image heap.
+     */
+    private final Map<String, Object> verifiedSecurityProviders = Collections.synchronizedMap(new HashMap<>());
+
+    private Constructor<?> sunECConstructor;
+
+    @Platforms(Platform.HOSTED_ONLY.class)
+    public SecurityProvidersSupport(List<String> userRequestedSecurityProviders) {
+        this.userRequestedSecurityProviders.addAll(userRequestedSecurityProviders);
+    }
+
+    @Fold
+    public static SecurityProvidersSupport singleton() {
+        return ImageSingletons.lookup(SecurityProvidersSupport.class);
+    }
+
+    @Platforms(Platform.HOSTED_ONLY.class)
+    public void addVerifiedSecurityProvider(String key, Object value) {
+        verifiedSecurityProviders.put(key, value);
+    }
+
+    public Object getSecurityProviderVerificationResult(String key) {
+        return verifiedSecurityProviders.get(key);
+    }
+
+    @Platforms(Platform.HOSTED_ONLY.class)
+    public void markSecurityProviderAsNotLoaded(String provider) {
+        markedAsNotLoaded.add(provider);
+    }
+
+    @Platforms(Platform.HOSTED_ONLY.class)
+    public boolean isSecurityProviderNotLoaded(String provider) {
+        return markedAsNotLoaded.contains(provider);
+    }
+
+    @Platforms(Platform.HOSTED_ONLY.class)
+    public boolean isUserRequestedSecurityProvider(String provider) {
+        return userRequestedSecurityProviders.contains(provider);
+    }
+
+    /**
+     * Returns {@code true} if the provider, identified by either its name (e.g., SUN) or fully
+     * qualified name (e.g., sun.security.provider.Sun), is either user-requested or reachable via a
+     * security service.
+     */
+    public boolean isSecurityProviderExpected(String providerName, String providerFQName) {
+        return verifiedSecurityProviders.containsKey(providerName) || userRequestedSecurityProviders.contains(providerFQName);
+    }
+
+    @Platforms(Platform.HOSTED_ONLY.class)
+    public void setSunECConstructor(Constructor<?> sunECConstructor) {
+        this.sunECConstructor = sunECConstructor;
+    }
+
+    public Provider allocateSunECProvider() {
+        try {
+            return (Provider) sunECConstructor.newInstance();
+        } catch (InstantiationException | IllegalAccessException | InvocationTargetException e) {
+            throw VMError.shouldNotReachHere("The SunEC constructor is not present.");
+        }
+    }
+}

substratevm/src/com.oracle.svm.core/src/com/oracle/svm/core/jdk/SecuritySubstitutions.java

@@ -26,7 +26,6 @@
 
 import static com.oracle.svm.core.snippets.KnownIntrinsics.readCallerStackPointer;
 
-import java.lang.ref.ReferenceQueue;
 import java.lang.reflect.Constructor;
 import java.net.URL;
 import java.security.AccessControlContext;
@@ -70,6 +69,8 @@
 import com.oracle.svm.core.util.VMError;
 import com.oracle.svm.util.ReflectionUtil;
 
+import jdk.graal.compiler.core.common.SuppressFBWarnings;
+import jdk.graal.compiler.serviceprovider.JavaVersionUtil;
 import sun.security.util.SecurityConstants;
 
 /*
@@ -358,6 +359,7 @@ final class Target_javax_crypto_JceSecurity {
     // value == PROVIDER_VERIFIED is successfully verified
     // value is failure cause Exception in error case
     @Alias //
+    @RecomputeFieldValue(kind = RecomputeFieldValue.Kind.Reset) //
     private static Map<Object, Object> verificationResults;
 
     @Alias //
@@ -368,16 +370,11 @@ final class Target_javax_crypto_JceSecurity {
     @RecomputeFieldValue(kind = RecomputeFieldValue.Kind.FromAlias) //
     private static Map<Class<?>, URL> codeBaseCacheRef = new WeakHashMap<>();
 
-    @Alias //
-    @TargetElement //
-    private static ReferenceQueue<Object> queue;
-
     @Substitute
     static Exception getVerificationResult(Provider p) {
         /* Start code block copied from original method. */
         /* The verification results map key is an identity wrapper object. */
-        Object key = new Target_javax_crypto_JceSecurity_WeakIdentityWrapper(p, queue);
-        Object o = verificationResults.get(key);
+        Object o = SecurityProvidersSupport.singleton().getSecurityProviderVerificationResult(p.getName());
         if (o == PROVIDER_VERIFIED) {
             return null;
         } else if (o != null) {
@@ -395,15 +392,6 @@ static Exception getVerificationResult(Provider p) {
     }
 }
 
-@TargetClass(className = "javax.crypto.JceSecurity", innerClass = "WeakIdentityWrapper")
-@SuppressWarnings({"unused"})
-final class Target_javax_crypto_JceSecurity_WeakIdentityWrapper {
-
-    @Alias //
-    Target_javax_crypto_JceSecurity_WeakIdentityWrapper(Provider obj, ReferenceQueue<Object> queue) {
-    }
-}
-
 class JceSecurityAccessor {
     private static volatile SecureRandom RANDOM;
 
@@ -577,19 +565,120 @@ final class Target_sun_security_jca_ProviderConfig {
     @Alias //
     private String provName;
 
+    @Alias//
+    private static sun.security.util.Debug debug;
+
+    @Alias//
+    private Provider provider;
+
+    @Alias//
+    private boolean isLoading;
+
+    @Alias//
+    private int tries;
+
+    @Alias
+    private native Provider doLoadProvider();
+
+    @Alias
+    private native boolean shouldLoad();
+
     /**
-     * All security providers used in a native-image must be registered during image build time. At
-     * runtime, we shouldn't have a call to doLoadProvider. However, this method is still reachable
-     * at runtime, and transitively includes other types in the image, among which is
-     * sun.security.jca.ProviderConfig.ProviderLoader. This class contains a static field with a
-     * cache of providers loaded during the image build. The contents of this cache can vary even
-     * when building the same image due to the way services are loaded on Java 11. This cache can
-     * increase the final image size substantially (if it contains, for example,
-     * {@code org.jcp.xml.dsig.internal.dom.XMLDSigRI}.
+     * The `entrypoint` for allocating security providers at runtime. The implementation is copied
+     * from the JDK with a small tweak to filter out providers that are neither user-requested nor
+     * reachable via a security service.
      */
     @Substitute
-    private Provider doLoadProvider() {
-        throw VMError.unsupportedFeature("Cannot load new security provider at runtime: " + provName + ".");
+    @SuppressWarnings("fallthrough")
+    @SuppressFBWarnings(value = "DC_DOUBLECHECK", justification = "This double-check is implemented correctly and is intentional.")
+    Provider getProvider() {
+        // volatile variable load
+        Provider p = provider;
+        if (p != null) {
+            return p;
+        }
+        // DCL
+        synchronized (this) {
+            p = provider;
+            if (p != null) {
+                return p;
+            }
+            if (!shouldLoad()) {
+                return null;
+            }
+
+            // Create providers which are in java.base directly
+            SecurityProvidersSupport support = SecurityProvidersSupport.singleton();
+            switch (provName) {
+                case "SUN", "sun.security.provider.Sun": {
+                    p = support.isSecurityProviderExpected("SUN", "sun.security.provider.Sun") ? new sun.security.provider.Sun() : null;
+                    break;
+                }
+                case "SunRsaSign", "sun.security.rsa.SunRsaSign": {
+                    p = support.isSecurityProviderExpected("SunRsaSign", "sun.security.rsa.SunRsaSign") ? new sun.security.rsa.SunRsaSign() : null;
+                    break;
+                }
+                case "SunJCE", "com.sun.crypto.provider.SunJCE": {
+                    p = support.isSecurityProviderExpected("SunJCE", "com.sun.crypto.provider.SunJCE") ? new com.sun.crypto.provider.SunJCE() : null;
+                    break;
+                }
+                case "SunJSSE": {
+                    p = support.isSecurityProviderExpected("SunJSSE", "sun.security.ssl.SunJSSE") ? new sun.security.ssl.SunJSSE() : null;
+                    break;
+                }
+                case "Apple", "apple.security.AppleProvider": {
+                    // need to use reflection since this class only exists on MacOsx
+                    try {
+                        Class<?> c = Class.forName("apple.security.AppleProvider");
+                        if (Provider.class.isAssignableFrom(c)) {
+                            @SuppressWarnings("deprecation")
+                            Object newInstance = c.newInstance();
+                            p = (Provider) newInstance;
+                        }
+                    } catch (Exception ex) {
+                        if (debug != null) {
+                            debug.println("Error loading provider Apple");
+                            ex.printStackTrace();
+                        }
+                    }
+                    break;
+                }
+                case "SunEC": {
+                    if (JavaVersionUtil.JAVA_SPEC > 21) {
+                        // Constructor inside method and then allocate. ModuleSupport to open.
+                        p = support.isSecurityProviderExpected("SunEC", "sun.security.ec.SunEC") ? support.allocateSunECProvider() : null;
+                        break;
+                    }
+                    /*
+                     * On older JDK versions, SunEC was part of the `jdk.crypto.ec` module and was
+                     * allocated via the service loading mechanism, so this fallthrough is
+                     * intentional. On newer JDK versions, SunEC is part of `java.base` and is
+                     * allocated directly.
+                     */
+                }
+                // fall through
+                default: {
+                    if (isLoading) {
+                        // because this method is synchronized, this can only
+                        // happen if there is recursion.
+                        if (debug != null) {
+                            debug.println("Recursion loading provider: " + this);
+                            new Exception("Call trace").printStackTrace();
+                        }
+                        return null;
+                    }
+                    try {
+                        isLoading = true;
+                        tries++;
+                        p = doLoadProvider();
+                    } finally {
+                        isLoading = false;
+                    }
+                }
+            }
+            provider = p;
+        }
+        return p;
     }
 }
 

substratevm/src/com.oracle.svm.core/src/com/oracle/svm/core/jdk/Target_sun_security_ssl_TrustStoreManager.java

@@ -89,13 +89,6 @@ public void afterRegistration(AfterRegistrationAccess access) {
          */
         RuntimeClassInitializationSupport rci = ImageSingletons.lookup(RuntimeClassInitializationSupport.class);
         rci.initializeAtBuildTime("sun.security.util.UntrustedCertificates", "Required for TrustStoreManager");
-        /*
-         * All security providers must be registered (and initialized) at buildtime (see
-         * SecuritySubstitutions.java). XMLDSigRI is used for validating XML Signatures from
-         * certificate files while generating X509Certificates.
-         */
-        rci.initializeAtBuildTime("org.jcp.xml.dsig.internal.dom.XMLDSigRI", "Required for TrustStoreManager");
-        rci.initializeAtBuildTime("org.jcp.xml.dsig.internal.dom.XMLDSigRI$ProviderService", "Required for TrustStoreManager");
     }
 }