1 /*
2 * Copyright (c) 1997, 2013, 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
390 // Package found, so check package sealing.
391 if (pkg.isSealed()) {
392 // Verify that code source URL is the same.
393 if (!pkg.isSealed(url)) {
394 throw new SecurityException(
395 "sealing violation: package " + pkgname + " is sealed");
396 }
397 } else {
398 // Make sure we are not attempting to seal the package
399 // at this code source URL.
400 if ((man != null) && isSealed(pkgname, man)) {
401 throw new SecurityException(
402 "sealing violation: can't seal package " + pkgname +
403 ": already loaded");
404 }
405 }
406 }
407 return pkg;
408 }
409
410 /*
411 * Defines a Class using the class bytes obtained from the specified
412 * Resource. The resulting Class must be resolved before it can be
413 * used.
414 */
415 private Class<?> defineClass(String name, Resource res) throws IOException {
416 long t0 = System.nanoTime();
417 int i = name.lastIndexOf('.');
418 URL url = res.getCodeSourceURL();
419 if (i != -1) {
420 String pkgname = name.substring(0, i);
421 // Check if package already loaded.
422 Manifest man = res.getManifest();
423 if (getAndVerifyPackage(pkgname, man, url) == null) {
424 try {
425 if (man != null) {
426 definePackage(pkgname, man, url);
427 } else {
428 definePackage(pkgname, null, null, null, null, null, null, null);
429 }
430 } catch (IllegalArgumentException iae) {
431 // parallel-capable class loaders: re-verify in case of a
432 // race condition
433 if (getAndVerifyPackage(pkgname, man, url) == null) {
434 // Should never happen
435 throw new AssertionError("Cannot find package " +
436 pkgname);
437 }
438 }
439 }
440 }
441 // Now read the class bytes and define the class
442 java.nio.ByteBuffer bb = res.getByteBuffer();
443 if (bb != null) {
444 // Use (direct) ByteBuffer:
445 CodeSigner[] signers = res.getCodeSigners();
446 CodeSource cs = new CodeSource(url, signers);
447 sun.misc.PerfCounter.getReadClassBytesTime().addElapsedTimeFrom(t0);
448 return defineClass(name, bb, cs);
449 } else {
450 byte[] b = res.getBytes();
451 // must read certificates AFTER reading bytes.
452 CodeSigner[] signers = res.getCodeSigners();
453 CodeSource cs = new CodeSource(url, signers);
454 sun.misc.PerfCounter.getReadClassBytesTime().addElapsedTimeFrom(t0);
455 return defineClass(name, b, 0, b.length, cs);
456 }
457 }
458
459 /**
|
1 /*
2 * Copyright (c) 1997, 2014, 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
390 // Package found, so check package sealing.
391 if (pkg.isSealed()) {
392 // Verify that code source URL is the same.
393 if (!pkg.isSealed(url)) {
394 throw new SecurityException(
395 "sealing violation: package " + pkgname + " is sealed");
396 }
397 } else {
398 // Make sure we are not attempting to seal the package
399 // at this code source URL.
400 if ((man != null) && isSealed(pkgname, man)) {
401 throw new SecurityException(
402 "sealing violation: can't seal package " + pkgname +
403 ": already loaded");
404 }
405 }
406 }
407 return pkg;
408 }
409
410 // Also called by VM to define Package for classes loaded from the CDS
411 // archive
412 private void definePackageInternal(String pkgname, Manifest man, URL url)
413 {
414 if (getAndVerifyPackage(pkgname, man, url) == null) {
415 try {
416 if (man != null) {
417 definePackage(pkgname, man, url);
418 } else {
419 definePackage(pkgname, null, null, null, null, null, null, null);
420 }
421 } catch (IllegalArgumentException iae) {
422 // parallel-capable class loaders: re-verify in case of a
423 // race condition
424 if (getAndVerifyPackage(pkgname, man, url) == null) {
425 // Should never happen
426 throw new AssertionError("Cannot find package " +
427 pkgname);
428 }
429 }
430 }
431 }
432
433 /*
434 * Defines a Class using the class bytes obtained from the specified
435 * Resource. The resulting Class must be resolved before it can be
436 * used.
437 *
438 * NOTE: the logic used here has been duplicated in the VM native code
439 * (search for invocation of definePackageInternal in the HotSpot sources).
440 * If this is changed, the VM code also need to be modified.
441 */
442 private Class<?> defineClass(String name, Resource res) throws IOException {
443 long t0 = System.nanoTime();
444 int i = name.lastIndexOf('.');
445 URL url = res.getCodeSourceURL();
446 if (i != -1) {
447 String pkgname = name.substring(0, i);
448 // Check if package already loaded.
449 Manifest man = res.getManifest();
450 definePackageInternal(pkgname, man, url);
451 }
452 // Now read the class bytes and define the class
453 java.nio.ByteBuffer bb = res.getByteBuffer();
454 if (bb != null) {
455 // Use (direct) ByteBuffer:
456 CodeSigner[] signers = res.getCodeSigners();
457 CodeSource cs = new CodeSource(url, signers);
458 sun.misc.PerfCounter.getReadClassBytesTime().addElapsedTimeFrom(t0);
459 return defineClass(name, bb, cs);
460 } else {
461 byte[] b = res.getBytes();
462 // must read certificates AFTER reading bytes.
463 CodeSigner[] signers = res.getCodeSigners();
464 CodeSource cs = new CodeSource(url, signers);
465 sun.misc.PerfCounter.getReadClassBytesTime().addElapsedTimeFrom(t0);
466 return defineClass(name, b, 0, b.length, cs);
467 }
468 }
469
470 /**
|