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
23 * questions.
24 */
25
26 package java.security;
27
28 import java.net.URL;
29 import java.util.ArrayList;
30 import java.util.Map;
31 import java.util.Objects;
32 import java.util.concurrent.ConcurrentHashMap;
33 import java.util.function.Function;
34
35 import sun.security.util.Debug;
36
37 /**
38 * This class extends ClassLoader with additional support for defining
39 * classes with an associated code source and permissions which are
40 * retrieved by the system policy by default.
41 *
42 * @author Li Gong
43 * @author Roland Schemers
44 */
45 public class SecureClassLoader extends ClassLoader {
46 /*
47 * If initialization succeed this is set to true and security checks will
48 * succeed. Otherwise the object is not initialized and the object is
49 * useless.
97 * <p>If there is a security manager, this method first
98 * calls the security manager's {@code checkCreateClassLoader}
99 * method to ensure creation of a class loader is allowed.
100 *
101 * @exception SecurityException if a security manager exists and its
102 * {@code checkCreateClassLoader} method doesn't allow
103 * creation of a class loader.
104 * @see SecurityManager#checkCreateClassLoader
105 */
106 protected SecureClassLoader() {
107 super();
108 // this is to make the stack depth consistent with 1.1
109 SecurityManager security = System.getSecurityManager();
110 if (security != null) {
111 security.checkCreateClassLoader();
112 }
113 initialized = true;
114 }
115
116 /**
117 * Converts an array of bytes into an instance of class Class,
118 * with an optional CodeSource. Before the
119 * class can be used it must be resolved.
120 * <p>
121 * If a non-null CodeSource is supplied a ProtectionDomain is
122 * constructed and associated with the class being defined.
123 *
124 * @param name the expected name of the class, or {@code null}
125 * if not known, using '.' and not '/' as the separator
126 * and without a trailing ".class" suffix.
127 * @param b the bytes that make up the class data. The bytes in
128 * positions {@code off} through {@code off+len-1}
129 * should have the format of a valid class file as defined by
130 * <cite>The Java™ Virtual Machine Specification</cite>.
131 * @param off the start offset in {@code b} of the class data
132 * @param len the length of the class data
133 * @param cs the associated CodeSource, or {@code null} if none
134 * @return the {@code Class} object created from the data,
135 * and optional CodeSource.
136 * @exception ClassFormatError if the data did not contain a valid class
|
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
23 * questions.
24 */
25
26 package java.security;
27
28 import java.util.Map;
29 import java.util.Objects;
30 import java.util.concurrent.ConcurrentHashMap;
31 import java.util.function.Function;
32
33 import sun.security.util.Debug;
34
35 /**
36 * This class extends ClassLoader with additional support for defining
37 * classes with an associated code source and permissions which are
38 * retrieved by the system policy by default.
39 *
40 * @author Li Gong
41 * @author Roland Schemers
42 */
43 public class SecureClassLoader extends ClassLoader {
44 /*
45 * If initialization succeed this is set to true and security checks will
46 * succeed. Otherwise the object is not initialized and the object is
47 * useless.
95 * <p>If there is a security manager, this method first
96 * calls the security manager's {@code checkCreateClassLoader}
97 * method to ensure creation of a class loader is allowed.
98 *
99 * @exception SecurityException if a security manager exists and its
100 * {@code checkCreateClassLoader} method doesn't allow
101 * creation of a class loader.
102 * @see SecurityManager#checkCreateClassLoader
103 */
104 protected SecureClassLoader() {
105 super();
106 // this is to make the stack depth consistent with 1.1
107 SecurityManager security = System.getSecurityManager();
108 if (security != null) {
109 security.checkCreateClassLoader();
110 }
111 initialized = true;
112 }
113
114 /**
115 * Creates a new {@code SecureClassLoader} of the specified name and
116 * using the specified parent class loader for delegation.
117 *
118 * @param name class loader name; or {@code null} if not named
119 * @param parent the parent class loader
120 *
121 * @throws SecurityException if a security manager exists and its
122 * {@link SecurityManager#checkCreateClassLoader()} method
123 * doesn't allow creation of a class loader.
124 *
125 * @since 9
126 */
127 protected SecureClassLoader(String name, ClassLoader parent) {
128 super(name, parent);
129 SecurityManager security = System.getSecurityManager();
130 if (security != null) {
131 security.checkCreateClassLoader();
132 }
133 initialized = true;
134 }
135
136 /**
137 * Converts an array of bytes into an instance of class Class,
138 * with an optional CodeSource. Before the
139 * class can be used it must be resolved.
140 * <p>
141 * If a non-null CodeSource is supplied a ProtectionDomain is
142 * constructed and associated with the class being defined.
143 *
144 * @param name the expected name of the class, or {@code null}
145 * if not known, using '.' and not '/' as the separator
146 * and without a trailing ".class" suffix.
147 * @param b the bytes that make up the class data. The bytes in
148 * positions {@code off} through {@code off+len-1}
149 * should have the format of a valid class file as defined by
150 * <cite>The Java™ Virtual Machine Specification</cite>.
151 * @param off the start offset in {@code b} of the class data
152 * @param len the length of the class data
153 * @param cs the associated CodeSource, or {@code null} if none
154 * @return the {@code Class} object created from the data,
155 * and optional CodeSource.
156 * @exception ClassFormatError if the data did not contain a valid class
|