1 /*
2 * Copyright (c) 1997, 2018, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation. Oracle designates this
8 * particular file as subject to the "Classpath" exception as provided
9 * by Oracle in the LICENSE file that accompanied this code.
10 *
11 * This code is distributed in the hope that it will be useful, but WITHOUT
12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
14 * version 2 for more details (a copy is included in the LICENSE file that
15 * accompanied this code).
16 *
17 * You should have received a copy of the GNU General Public License version
18 * 2 along with this work; if not, write to the Free Software Foundation,
19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20 *
21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
22 * or visit www.oracle.com if you need additional information or have any
653 }
654 if (targetClass != null // instance member or constructor
655 && Modifier.isProtected(modifiers)
656 && targetClass != memberClass) {
657 if (isAccessChecked(caller, targetClass)) {
658 return true; // ACCESS IS OK
659 }
660 } else if (isAccessChecked(caller)) {
661 // Non-protected case (or targetClass == memberClass or static member).
662 return true; // ACCESS IS OK
663 }
664
665 // If no return, fall through to the slow path.
666 return slowVerifyAccess(caller, memberClass, targetClass, modifiers);
667 }
668
669 // Keep all this slow stuff out of line:
670 private boolean slowVerifyAccess(Class<?> caller, Class<?> memberClass,
671 Class<?> targetClass, int modifiers)
672 {
673 if (!Reflection.verifyMemberAccess(caller, memberClass, targetClass, modifiers)) {
674 // access denied
675 return false;
676 }
677
678 // access okay
679 logIfExportedForIllegalAccess(caller, memberClass);
680
681 // Success: Update the cache.
682 Object cache = (targetClass != null
683 && Modifier.isProtected(modifiers)
684 && targetClass != memberClass)
685 ? Cache.protectedMemberCallerCache(caller, targetClass)
686 : new WeakReference<>(caller);
687 accessCheckCache = cache; // write volatile
688 return true;
689 }
690
691 // true to print a stack trace when access fails
692 private static volatile boolean printStackWhenAccessFails;
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1 /*
2 * Copyright (c) 1997, 2019, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation. Oracle designates this
8 * particular file as subject to the "Classpath" exception as provided
9 * by Oracle in the LICENSE file that accompanied this code.
10 *
11 * This code is distributed in the hope that it will be useful, but WITHOUT
12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
14 * version 2 for more details (a copy is included in the LICENSE file that
15 * accompanied this code).
16 *
17 * You should have received a copy of the GNU General Public License version
18 * 2 along with this work; if not, write to the Free Software Foundation,
19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20 *
21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
22 * or visit www.oracle.com if you need additional information or have any
653 }
654 if (targetClass != null // instance member or constructor
655 && Modifier.isProtected(modifiers)
656 && targetClass != memberClass) {
657 if (isAccessChecked(caller, targetClass)) {
658 return true; // ACCESS IS OK
659 }
660 } else if (isAccessChecked(caller)) {
661 // Non-protected case (or targetClass == memberClass or static member).
662 return true; // ACCESS IS OK
663 }
664
665 // If no return, fall through to the slow path.
666 return slowVerifyAccess(caller, memberClass, targetClass, modifiers);
667 }
668
669 // Keep all this slow stuff out of line:
670 private boolean slowVerifyAccess(Class<?> caller, Class<?> memberClass,
671 Class<?> targetClass, int modifiers)
672 {
673
674 if (caller == null) {
675 // No caller frame when a native thread attaches to the VM
676 // can access public member of a type in unconditional exported API packages
677 Module module = memberClass.getModule();
678 return Modifier.isPublic(modifiers) && module.isExported(memberClass.getPackageName());
679 }
680
681 if (!Reflection.verifyMemberAccess(caller, memberClass, targetClass, modifiers)) {
682 // access denied
683 return false;
684 }
685
686 // access okay
687 logIfExportedForIllegalAccess(caller, memberClass);
688
689 // Success: Update the cache.
690 Object cache = (targetClass != null
691 && Modifier.isProtected(modifiers)
692 && targetClass != memberClass)
693 ? Cache.protectedMemberCallerCache(caller, targetClass)
694 : new WeakReference<>(caller);
695 accessCheckCache = cache; // write volatile
696 return true;
697 }
698
699 // true to print a stack trace when access fails
700 private static volatile boolean printStackWhenAccessFails;
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