| /* |
| * Copyright (c) 2021, 2023, 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. |
| * |
| * 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. |
| * |
| */ |
| |
| #include "precompiled.hpp" |
| #include "cds/cdsProtectionDomain.hpp" |
| #include "classfile/classLoader.hpp" |
| #include "classfile/classLoaderData.inline.hpp" |
| #include "classfile/classLoaderExt.hpp" |
| #include "classfile/javaClasses.hpp" |
| #include "classfile/moduleEntry.hpp" |
| #include "classfile/systemDictionaryShared.hpp" |
| #include "classfile/vmClasses.hpp" |
| #include "classfile/vmSymbols.hpp" |
| #include "memory/oopFactory.hpp" |
| #include "memory/resourceArea.hpp" |
| #include "memory/universe.hpp" |
| #include "oops/instanceKlass.hpp" |
| #include "oops/symbol.hpp" |
| #include "runtime/javaCalls.hpp" |
| |
| OopHandle CDSProtectionDomain::_shared_protection_domains; |
| OopHandle CDSProtectionDomain::_shared_jar_urls; |
| OopHandle CDSProtectionDomain::_shared_jar_manifests; |
| |
| // Initializes the java.lang.Package and java.security.ProtectionDomain objects associated with |
| // the given InstanceKlass. |
| // Returns the ProtectionDomain for the InstanceKlass. |
| Handle CDSProtectionDomain::init_security_info(Handle class_loader, InstanceKlass* ik, PackageEntry* pkg_entry, TRAPS) { |
| int index = ik->shared_classpath_index(); |
| assert(index >= 0, "Sanity"); |
| SharedClassPathEntry* ent = FileMapInfo::shared_path(index); |
| Symbol* class_name = ik->name(); |
| |
| if (ent->is_modules_image()) { |
| // For shared app/platform classes originated from the run-time image: |
| // The ProtectionDomains are cached in the corresponding ModuleEntries |
| // for fast access by the VM. |
| // all packages from module image are already created during VM bootstrap in |
| // Modules::define_module(). |
| assert(pkg_entry != nullptr, "archived class in module image cannot be from unnamed package"); |
| ModuleEntry* mod_entry = pkg_entry->module(); |
| return get_shared_protection_domain(class_loader, mod_entry, THREAD); |
| } else { |
| // For shared app/platform classes originated from JAR files on the class path: |
| // Each of the 3 SystemDictionaryShared::_shared_xxx arrays has the same length |
| // as the shared classpath table in the shared archive (see |
| // FileMap::_shared_path_table in filemap.hpp for details). |
| // |
| // If a shared InstanceKlass k is loaded from the class path, let |
| // |
| // index = k->shared_classpath_index(): |
| // |
| // FileMap::_shared_path_table[index] identifies the JAR file that contains k. |
| // |
| // k's protection domain is: |
| // |
| // ProtectionDomain pd = _shared_protection_domains[index]; |
| // |
| // and k's Package is initialized using |
| // |
| // manifest = _shared_jar_manifests[index]; |
| // url = _shared_jar_urls[index]; |
| // define_shared_package(class_name, class_loader, manifest, url, CHECK_NH); |
| // |
| // Note that if an element of these 3 _shared_xxx arrays is null, it will be initialized by |
| // the corresponding SystemDictionaryShared::get_shared_xxx() function. |
| Handle manifest = get_shared_jar_manifest(index, CHECK_NH); |
| Handle url = get_shared_jar_url(index, CHECK_NH); |
| int index_offset = index - ClassLoaderExt::app_class_paths_start_index(); |
| if (index_offset < PackageEntry::max_index_for_defined_in_class_path()) { |
| if (pkg_entry == nullptr || !pkg_entry->is_defined_by_cds_in_class_path(index_offset)) { |
| // define_shared_package only needs to be called once for each package in a jar specified |
| // in the shared class path. |
| define_shared_package(class_name, class_loader, manifest, url, CHECK_NH); |
| if (pkg_entry != nullptr) { |
| pkg_entry->set_defined_by_cds_in_class_path(index_offset); |
| } |
| } |
| } else { |
| define_shared_package(class_name, class_loader, manifest, url, CHECK_NH); |
| } |
| return get_shared_protection_domain(class_loader, index, url, THREAD); |
| } |
| } |
| |
| Handle CDSProtectionDomain::get_package_name(Symbol* class_name, TRAPS) { |
| ResourceMark rm(THREAD); |
| Handle pkgname_string; |
| TempNewSymbol pkg = ClassLoader::package_from_class_name(class_name); |
| if (pkg != nullptr) { // Package prefix found |
| const char* pkgname = pkg->as_klass_external_name(); |
| pkgname_string = java_lang_String::create_from_str(pkgname, |
| CHECK_(pkgname_string)); |
| } |
| return pkgname_string; |
| } |
| |
| PackageEntry* CDSProtectionDomain::get_package_entry_from_class(InstanceKlass* ik, Handle class_loader) { |
| PackageEntry* pkg_entry = ik->package(); |
| if (MetaspaceShared::use_full_module_graph() && ik->is_shared() && pkg_entry != nullptr) { |
| assert(MetaspaceShared::is_in_shared_metaspace(pkg_entry), "must be"); |
| assert(!ik->is_shared_unregistered_class(), "unexpected archived package entry for an unregistered class"); |
| assert(ik->module()->is_named(), "unexpected archived package entry for a class in an unnamed module"); |
| return pkg_entry; |
| } |
| TempNewSymbol pkg_name = ClassLoader::package_from_class_name(ik->name()); |
| if (pkg_name != nullptr) { |
| pkg_entry = ClassLoaderData::class_loader_data(class_loader())->packages()->lookup_only(pkg_name); |
| } else { |
| pkg_entry = nullptr; |
| } |
| return pkg_entry; |
| } |
| |
| // Define Package for shared app classes from JAR file and also checks for |
| // package sealing (all done in Java code) |
| // See http://docs.oracle.com/javase/tutorial/deployment/jar/sealman.html |
| void CDSProtectionDomain::define_shared_package(Symbol* class_name, |
| Handle class_loader, |
| Handle manifest, |
| Handle url, |
| TRAPS) { |
| assert(SystemDictionary::is_system_class_loader(class_loader()), "unexpected class loader"); |
| // get_package_name() returns a null handle if the class is in unnamed package |
| Handle pkgname_string = get_package_name(class_name, CHECK); |
| if (pkgname_string.not_null()) { |
| Klass* app_classLoader_klass = vmClasses::jdk_internal_loader_ClassLoaders_AppClassLoader_klass(); |
| JavaValue result(T_OBJECT); |
| JavaCallArguments args(3); |
| args.set_receiver(class_loader); |
| args.push_oop(pkgname_string); |
| args.push_oop(manifest); |
| args.push_oop(url); |
| JavaCalls::call_virtual(&result, app_classLoader_klass, |
| vmSymbols::defineOrCheckPackage_name(), |
| vmSymbols::defineOrCheckPackage_signature(), |
| &args, |
| CHECK); |
| } |
| } |
| |
| Handle CDSProtectionDomain::create_jar_manifest(const char* manifest_chars, size_t size, TRAPS) { |
| typeArrayOop buf = oopFactory::new_byteArray((int)size, CHECK_NH); |
| typeArrayHandle bufhandle(THREAD, buf); |
| ArrayAccess<>::arraycopy_from_native(reinterpret_cast<const jbyte*>(manifest_chars), |
| buf, typeArrayOopDesc::element_offset<jbyte>(0), size); |
| Handle bais = JavaCalls::construct_new_instance(vmClasses::ByteArrayInputStream_klass(), |
| vmSymbols::byte_array_void_signature(), |
| bufhandle, CHECK_NH); |
| // manifest = new Manifest(ByteArrayInputStream) |
| Handle manifest = JavaCalls::construct_new_instance(vmClasses::Jar_Manifest_klass(), |
| vmSymbols::input_stream_void_signature(), |
| bais, CHECK_NH); |
| return manifest; |
| } |
| |
| Handle CDSProtectionDomain::get_shared_jar_manifest(int shared_path_index, TRAPS) { |
| Handle manifest; |
| if (shared_jar_manifest(shared_path_index) == nullptr) { |
| SharedClassPathEntry* ent = FileMapInfo::shared_path(shared_path_index); |
| size_t size = (size_t)ent->manifest_size(); |
| if (size == 0) { |
| return Handle(); |
| } |
| |
| // ByteArrayInputStream bais = new ByteArrayInputStream(buf); |
| const char* src = ent->manifest(); |
| assert(src != nullptr, "No Manifest data"); |
| manifest = create_jar_manifest(src, size, CHECK_NH); |
| atomic_set_shared_jar_manifest(shared_path_index, manifest()); |
| } |
| manifest = Handle(THREAD, shared_jar_manifest(shared_path_index)); |
| assert(manifest.not_null(), "sanity"); |
| return manifest; |
| } |
| |
| Handle CDSProtectionDomain::get_shared_jar_url(int shared_path_index, TRAPS) { |
| Handle url_h; |
| if (shared_jar_url(shared_path_index) == nullptr) { |
| JavaValue result(T_OBJECT); |
| const char* path = FileMapInfo::shared_path_name(shared_path_index); |
| Handle path_string = java_lang_String::create_from_str(path, CHECK_(url_h)); |
| Klass* classLoaders_klass = |
| vmClasses::jdk_internal_loader_ClassLoaders_klass(); |
| JavaCalls::call_static(&result, classLoaders_klass, |
| vmSymbols::toFileURL_name(), |
| vmSymbols::toFileURL_signature(), |
| path_string, CHECK_(url_h)); |
| |
| atomic_set_shared_jar_url(shared_path_index, result.get_oop()); |
| } |
| |
| url_h = Handle(THREAD, shared_jar_url(shared_path_index)); |
| assert(url_h.not_null(), "sanity"); |
| return url_h; |
| } |
| |
| // Get the ProtectionDomain associated with the CodeSource from the classloader. |
| Handle CDSProtectionDomain::get_protection_domain_from_classloader(Handle class_loader, |
| Handle url, TRAPS) { |
| // CodeSource cs = new CodeSource(url, null); |
| Handle cs = JavaCalls::construct_new_instance(vmClasses::CodeSource_klass(), |
| vmSymbols::url_code_signer_array_void_signature(), |
| url, Handle(), CHECK_NH); |
| |
| // protection_domain = SecureClassLoader.getProtectionDomain(cs); |
| Klass* secureClassLoader_klass = vmClasses::SecureClassLoader_klass(); |
| JavaValue obj_result(T_OBJECT); |
| JavaCalls::call_virtual(&obj_result, class_loader, secureClassLoader_klass, |
| vmSymbols::getProtectionDomain_name(), |
| vmSymbols::getProtectionDomain_signature(), |
| cs, CHECK_NH); |
| return Handle(THREAD, obj_result.get_oop()); |
| } |
| |
| // Returns the ProtectionDomain associated with the JAR file identified by the url. |
| Handle CDSProtectionDomain::get_shared_protection_domain(Handle class_loader, |
| int shared_path_index, |
| Handle url, |
| TRAPS) { |
| Handle protection_domain; |
| if (shared_protection_domain(shared_path_index) == nullptr) { |
| Handle pd = get_protection_domain_from_classloader(class_loader, url, CHECK_NH); |
| atomic_set_shared_protection_domain(shared_path_index, pd()); |
| } |
| |
| // Acquire from the cache because if another thread beats the current one to |
| // set the shared protection_domain and the atomic_set fails, the current thread |
| // needs to get the updated protection_domain from the cache. |
| protection_domain = Handle(THREAD, shared_protection_domain(shared_path_index)); |
| assert(protection_domain.not_null(), "sanity"); |
| return protection_domain; |
| } |
| |
| // Returns the ProtectionDomain associated with the moduleEntry. |
| Handle CDSProtectionDomain::get_shared_protection_domain(Handle class_loader, |
| ModuleEntry* mod, TRAPS) { |
| ClassLoaderData *loader_data = mod->loader_data(); |
| if (mod->shared_protection_domain() == nullptr) { |
| Symbol* location = mod->location(); |
| if (location != nullptr) { |
| Handle location_string = java_lang_String::create_from_symbol( |
| location, CHECK_NH); |
| Handle url; |
| JavaValue result(T_OBJECT); |
| if (location->starts_with("jrt:/")) { |
| url = JavaCalls::construct_new_instance(vmClasses::URL_klass(), |
| vmSymbols::string_void_signature(), |
| location_string, CHECK_NH); |
| } else { |
| Klass* classLoaders_klass = |
| vmClasses::jdk_internal_loader_ClassLoaders_klass(); |
| JavaCalls::call_static(&result, classLoaders_klass, vmSymbols::toFileURL_name(), |
| vmSymbols::toFileURL_signature(), |
| location_string, CHECK_NH); |
| url = Handle(THREAD, result.get_oop()); |
| } |
| |
| Handle pd = get_protection_domain_from_classloader(class_loader, url, |
| CHECK_NH); |
| mod->set_shared_protection_domain(loader_data, pd); |
| } |
| } |
| |
| Handle protection_domain(THREAD, mod->shared_protection_domain()); |
| assert(protection_domain.not_null(), "sanity"); |
| return protection_domain; |
| } |
| |
| void CDSProtectionDomain::atomic_set_array_index(OopHandle array, int index, oop o) { |
| // Benign race condition: array.obj_at(index) may already be filled in. |
| // The important thing here is that all threads pick up the same result. |
| // It doesn't matter which racing thread wins, as long as only one |
| // result is used by all threads, and all future queries. |
| ((objArrayOop)array.resolve())->replace_if_null(index, o); |
| } |
| |
| oop CDSProtectionDomain::shared_protection_domain(int index) { |
| return ((objArrayOop)_shared_protection_domains.resolve())->obj_at(index); |
| } |
| |
| void CDSProtectionDomain::allocate_shared_protection_domain_array(int size, TRAPS) { |
| if (_shared_protection_domains.resolve() == nullptr) { |
| oop spd = oopFactory::new_objArray( |
| vmClasses::ProtectionDomain_klass(), size, CHECK); |
| _shared_protection_domains = OopHandle(Universe::vm_global(), spd); |
| } |
| } |
| |
| oop CDSProtectionDomain::shared_jar_url(int index) { |
| return ((objArrayOop)_shared_jar_urls.resolve())->obj_at(index); |
| } |
| |
| void CDSProtectionDomain::allocate_shared_jar_url_array(int size, TRAPS) { |
| if (_shared_jar_urls.resolve() == nullptr) { |
| oop sju = oopFactory::new_objArray( |
| vmClasses::URL_klass(), size, CHECK); |
| _shared_jar_urls = OopHandle(Universe::vm_global(), sju); |
| } |
| } |
| |
| oop CDSProtectionDomain::shared_jar_manifest(int index) { |
| return ((objArrayOop)_shared_jar_manifests.resolve())->obj_at(index); |
| } |
| |
| void CDSProtectionDomain::allocate_shared_jar_manifest_array(int size, TRAPS) { |
| if (_shared_jar_manifests.resolve() == nullptr) { |
| oop sjm = oopFactory::new_objArray( |
| vmClasses::Jar_Manifest_klass(), size, CHECK); |
| _shared_jar_manifests = OopHandle(Universe::vm_global(), sjm); |
| } |
| } |
