--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/src/hotspot/share/classfile/sharedClassUtil.cpp Mon Nov 27 20:21:34 2017 -0800
@@ -0,0 +1,248 @@
+/*
+ * Copyright (c) 2014, 2017, 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 "classfile/classLoader.hpp"
+#include "classfile/classLoaderExt.hpp"
+#include "classfile/dictionary.hpp"
+#include "classfile/javaClasses.hpp"
+#include "classfile/sharedClassUtil.hpp"
+#include "classfile/stringTable.hpp"
+#include "classfile/symbolTable.hpp"
+#include "classfile/systemDictionary.hpp"
+#include "classfile/systemDictionaryShared.hpp"
+#include "memory/filemap.hpp"
+#include "memory/metadataFactory.hpp"
+#include "memory/resourceArea.hpp"
+#include "oops/instanceKlass.hpp"
+#include "runtime/arguments.hpp"
+#include "runtime/java.hpp"
+#include "runtime/os.hpp"
+
+class ManifestStream: public ResourceObj {
+ private:
+ u1* _buffer_start; // Buffer bottom
+ u1* _buffer_end; // Buffer top (one past last element)
+ u1* _current; // Current buffer position
+
+ public:
+ // Constructor
+ ManifestStream(u1* buffer, int length) : _buffer_start(buffer),
+ _current(buffer) {
+ _buffer_end = buffer + length;
+ }
+
+ static bool is_attr(u1* attr, const char* name) {
+ return strncmp((const char*)attr, name, strlen(name)) == 0;
+ }
+
+ static char* copy_attr(u1* value, size_t len) {
+ char* buf = NEW_RESOURCE_ARRAY(char, len + 1);
+ strncpy(buf, (char*)value, len);
+ buf[len] = 0;
+ return buf;
+ }
+
+ // The return value indicates if the JAR is signed or not
+ bool check_is_signed() {
+ u1* attr = _current;
+ bool isSigned = false;
+ while (_current < _buffer_end) {
+ if (*_current == '\n') {
+ *_current = '\0';
+ u1* value = (u1*)strchr((char*)attr, ':');
+ if (value != NULL) {
+ assert(*(value+1) == ' ', "Unrecognized format" );
+ if (strstr((char*)attr, "-Digest") != NULL) {
+ isSigned = true;
+ break;
+ }
+ }
+ *_current = '\n'; // restore
+ attr = _current + 1;
+ }
+ _current ++;
+ }
+ return isSigned;
+ }
+};
+
+void SharedPathsMiscInfoExt::print_path(outputStream* out, int type, const char* path) {
+ switch(type) {
+ case APP:
+ ClassLoader::trace_class_path("Expecting -Djava.class.path=", path);
+ break;
+ default:
+ SharedPathsMiscInfo::print_path(out, type, path);
+ }
+}
+
+bool SharedPathsMiscInfoExt::check(jint type, const char* path) {
+
+ switch (type) {
+ case APP:
+ {
+ // Prefix is OK: E.g., dump with -cp foo.jar, but run with -cp foo.jar:bar.jar
+ size_t len = strlen(path);
+ const char *appcp = Arguments::get_appclasspath();
+ assert(appcp != NULL, "NULL app classpath");
+ size_t appcp_len = strlen(appcp);
+ if (appcp_len < len) {
+ return fail("Run time APP classpath is shorter than the one at dump time: ", appcp);
+ }
+ ResourceMark rm;
+ char* tmp_path;
+ if (len == appcp_len) {
+ tmp_path = (char*)appcp;
+ } else {
+ tmp_path = NEW_RESOURCE_ARRAY(char, len + 1);
+ strncpy(tmp_path, appcp, len);
+ tmp_path[len] = 0;
+ }
+ if (os::file_name_strcmp(path, tmp_path) != 0) {
+ return fail("[APP classpath mismatch, actual: -Djava.class.path=", appcp);
+ }
+ if (appcp[len] != '\0' && appcp[len] != os::path_separator()[0]) {
+ return fail("Dump time APP classpath is not a proper prefix of run time APP classpath: ", appcp);
+ }
+ }
+ break;
+ default:
+ return SharedPathsMiscInfo::check(type, path);
+ }
+
+ return true;
+}
+
+void SharedClassUtil::update_shared_classpath(ClassPathEntry *cpe, SharedClassPathEntry* e, TRAPS) {
+ ClassLoaderData* loader_data = ClassLoaderData::the_null_class_loader_data();
+ SharedClassPathEntryExt* ent = (SharedClassPathEntryExt*)e;
+ ResourceMark rm(THREAD);
+ jint manifest_size;
+ bool isSigned;
+ char* manifest = ClassLoaderExt::read_manifest(cpe, &manifest_size, CHECK);
+ if (manifest != NULL) {
+ ManifestStream* stream = new ManifestStream((u1*)manifest,
+ manifest_size);
+ isSigned = stream->check_is_signed();
+ if (isSigned) {
+ ent->_is_signed = true;
+ } else {
+ // Copy the manifest into the shared archive
+ manifest = ClassLoaderExt::read_raw_manifest(cpe, &manifest_size, CHECK);
+ Array<u1>* buf = MetadataFactory::new_array<u1>(loader_data,
+ manifest_size,
+ THREAD);
+ char* p = (char*)(buf->data());
+ memcpy(p, manifest, manifest_size);
+ ent->set_manifest(buf);
+ ent->_is_signed = false;
+ }
+ }
+}
+
+void SharedClassUtil::initialize(TRAPS) {
+ if (UseSharedSpaces) {
+ int size = FileMapInfo::get_number_of_share_classpaths();
+ if (size > 0) {
+ SystemDictionaryShared::allocate_shared_data_arrays(size, THREAD);
+ if (!DumpSharedSpaces) {
+ FileMapHeaderExt* header = (FileMapHeaderExt*)FileMapInfo::current_info()->header();
+ ClassLoaderExt::init_paths_start_index(header->_app_paths_start_index);
+ }
+ }
+ }
+
+ if (DumpSharedSpaces) {
+ if (SharedArchiveConfigFile) {
+ read_extra_data(SharedArchiveConfigFile, THREAD);
+ }
+ }
+}
+
+void SharedClassUtil::read_extra_data(const char* filename, TRAPS) {
+ HashtableTextDump reader(filename);
+ reader.check_version("VERSION: 1.0");
+
+ while (reader.remain() > 0) {
+ int utf8_length;
+ int prefix_type = reader.scan_prefix(&utf8_length);
+ ResourceMark rm(THREAD);
+ char* utf8_buffer = NEW_RESOURCE_ARRAY(char, utf8_length);
+ reader.get_utf8(utf8_buffer, utf8_length);
+
+ if (prefix_type == HashtableTextDump::SymbolPrefix) {
+ SymbolTable::new_symbol(utf8_buffer, utf8_length, THREAD);
+ } else{
+ assert(prefix_type == HashtableTextDump::StringPrefix, "Sanity");
+ utf8_buffer[utf8_length] = '\0';
+ oop s = StringTable::intern(utf8_buffer, THREAD);
+ }
+ }
+}
+
+bool SharedClassUtil::is_classpath_entry_signed(int classpath_index) {
+ assert(classpath_index >= 0, "Sanity");
+ SharedClassPathEntryExt* ent = (SharedClassPathEntryExt*)
+ FileMapInfo::shared_classpath(classpath_index);
+ return ent->_is_signed;
+}
+
+void FileMapHeaderExt::populate(FileMapInfo* mapinfo, size_t alignment) {
+ FileMapInfo::FileMapHeader::populate(mapinfo, alignment);
+
+ ClassLoaderExt::finalize_shared_paths_misc_info();
+ _app_paths_start_index = ClassLoaderExt::app_paths_start_index();
+
+ _verify_local = BytecodeVerificationLocal;
+ _verify_remote = BytecodeVerificationRemote;
+ _has_platform_or_app_classes = ClassLoaderExt::has_platform_or_app_classes();
+}
+
+bool FileMapHeaderExt::validate() {
+ if (UseAppCDS) {
+ const char* prop = Arguments::get_property("java.system.class.loader");
+ if (prop != NULL) {
+ warning("UseAppCDS is disabled because the java.system.class.loader property is specified (value = \"%s\"). "
+ "To enable UseAppCDS, this property must be not be set", prop);
+ UseAppCDS = false;
+ }
+ }
+
+ if (!FileMapInfo::FileMapHeader::validate()) {
+ return false;
+ }
+
+ // For backwards compatibility, we don't check the verification setting
+ // if the archive only contains system classes.
+ if (_has_platform_or_app_classes &&
+ ((!_verify_local && BytecodeVerificationLocal) ||
+ (!_verify_remote && BytecodeVerificationRemote))) {
+ FileMapInfo::fail_continue("The shared archive file was created with less restrictive "
+ "verification setting than the current setting.");
+ return false;
+ }
+
+ return true;
+}