#641

Committed 19 Aug 2024 10:38PM CUT coverage: 85.389% (-0.06%) from 85.448%

Build # #641

Build Type

push

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Commit Message

Disable validation for minor breakage of protected API.

Run Details

28759 of 33680 relevant lines covered (85.39%)

0.85 hits per line

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32.0

/byte-buddy-dep/src/main/java/net/bytebuddy/utility/OpenedClassReader.java

/*
 * Copyright 2014 - Present Rafael Winterhalter
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package net.bytebuddy.utility;

import net.bytebuddy.ClassFileVersion;
import net.bytebuddy.build.AccessControllerPlugin;
import net.bytebuddy.utility.privilege.GetSystemPropertyAction;
import org.objectweb.asm.ClassReader;
import org.objectweb.asm.Opcodes;

import java.security.PrivilegedAction;

/**
 * A factory for a {@link ClassReader} that does not apply a class file version check if the
 * {@code net.bytebuddy.experimental} property is set.
 */
public class OpenedClassReader implements AsmClassReader.Factory {

    /**
     * Indicates that Byte Buddy should not validate the maximum supported class file version.
     */
    public static final String EXPERIMENTAL_PROPERTY = "net.bytebuddy.experimental";

    /**
     * {@code true} if Byte Buddy is executed in experimental mode.
     */
    public static final boolean EXPERIMENTAL;

    /**
     * Indicates the ASM API version that is used throughout Byte Buddy.
     */
    public static final int ASM_API;

    /*
     * Checks the experimental property.
     */
    static {
        boolean experimental;
        try {
            experimental = Boolean.parseBoolean(doPrivileged(new GetSystemPropertyAction(EXPERIMENTAL_PROPERTY)));
        } catch (Exception ignored) {
            experimental = false;
        }
        EXPERIMENTAL = experimental;
        ASM_API = Opcodes.ASM9;
    }

    /**
     * {@inheritDoc}
     */
    public AsmClassReader make(byte[] binaryRepresentation) {
        return new AsmClassReader.Default(of(binaryRepresentation));
    }

    /**
     * A proxy for {@code java.security.AccessController#doPrivileged} that is activated if available.
     *
     * @param action The action to execute from a privileged context.
     * @param <T>    The type of the action's resolved value.
     * @return The action's resolved value.
     */
    @AccessControllerPlugin.Enhance
    private static <T> T doPrivileged(PrivilegedAction<T> action) {
        return action.run();
    }

    /**
     * Creates a class reader for the given binary representation of a class file.
     *
     * @param binaryRepresentation The binary representation of a class file to read.
     * @return An appropriate class reader.
     */
    public static ClassReader of(byte[] binaryRepresentation) {
        ClassFileVersion classFileVersion = ClassFileVersion.ofClassFile(binaryRepresentation), latest = ClassFileVersion.latest();
        if (classFileVersion.isGreaterThan(latest)) {
            if (EXPERIMENTAL) {
                binaryRepresentation[4] = (byte) (latest.getMinorVersion() >>> 8);
                binaryRepresentation[5] = (byte) latest.getMinorVersion();
                binaryRepresentation[6] = (byte) (latest.getMajorVersion() >>> 8);
                binaryRepresentation[7] = (byte) latest.getMajorVersion();
                ClassReader classReader = new ClassReader(binaryRepresentation);
                binaryRepresentation[4] = (byte) (classFileVersion.getMinorVersion() >>> 8);
                binaryRepresentation[5] = (byte) classFileVersion.getMinorVersion();
                binaryRepresentation[6] = (byte) (classFileVersion.getMajorVersion() >>> 8);
                binaryRepresentation[7] = (byte) classFileVersion.getMajorVersion();
                return classReader;
            } else {
                throw new IllegalArgumentException(classFileVersion
                        + " is not supported by the current version of Byte Buddy which officially supports " + latest
                        + " - update Byte Buddy or set " + EXPERIMENTAL_PROPERTY + " as a VM property");
            }
        } else {
            return new ClassReader(binaryRepresentation);
        }
    }
}

1	/*
2	* Copyright 2014 - Present Rafael Winterhalter
3	*
4	* Licensed under the Apache License, Version 2.0 (the "License");
5	* you may not use this file except in compliance with the License.
6	* You may obtain a copy of the License at
7	*
8	* http://www.apache.org/licenses/LICENSE-2.0
9	*
10	* Unless required by applicable law or agreed to in writing, software
11	* distributed under the License is distributed on an "AS IS" BASIS,
12	* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13	* See the License for the specific language governing permissions and
14	* limitations under the License.
15	*/
16	package net.bytebuddy.utility;
17
18	import net.bytebuddy.ClassFileVersion;
19	import net.bytebuddy.build.AccessControllerPlugin;
20	import net.bytebuddy.utility.privilege.GetSystemPropertyAction;
21	import org.objectweb.asm.ClassReader;
22	import org.objectweb.asm.Opcodes;
23
24	import java.security.PrivilegedAction;
25
26	/**
27	* A factory for a {@link ClassReader} that does not apply a class file version check if the
28	* {@code net.bytebuddy.experimental} property is set.
29	*/
30	public class OpenedClassReader implements AsmClassReader.Factory {	×
31
32	/**
33	* Indicates that Byte Buddy should not validate the maximum supported class file version.
34	*/
35	public static final String EXPERIMENTAL_PROPERTY = "net.bytebuddy.experimental";
36
37	/**
38	* {@code true} if Byte Buddy is executed in experimental mode.
39	*/
40	public static final boolean EXPERIMENTAL;
41
42	/**
43	* Indicates the ASM API version that is used throughout Byte Buddy.
44	*/
45	public static final int ASM_API;
46
47	/*
48	* Checks the experimental property.
49	*/
50	static {
51	boolean experimental;
52	try {
53	experimental = Boolean.parseBoolean(doPrivileged(new GetSystemPropertyAction(EXPERIMENTAL_PROPERTY)));	1✔
54	} catch (Exception ignored) {	×
55	experimental = false;	×
56	}	1✔
57	EXPERIMENTAL = experimental;	1✔
58	ASM_API = Opcodes.ASM9;	1✔
59	}	1✔
60
61	/**
62	* {@inheritDoc}
63	*/
64	public AsmClassReader make(byte[] binaryRepresentation) {
65	return new AsmClassReader.Default(of(binaryRepresentation));	×
66	}
67
68	/**
69	* A proxy for {@code java.security.AccessController#doPrivileged} that is activated if available.
70	*
71	* @param action The action to execute from a privileged context.
72	* @param <T> The type of the action's resolved value.
73	* @return The action's resolved value.
74	*/
75	@AccessControllerPlugin.Enhance
76	private static <T> T doPrivileged(PrivilegedAction<T> action) {
77	return action.run();	×
78	}
79
80	/**
81	* Creates a class reader for the given binary representation of a class file.
82	*
83	* @param binaryRepresentation The binary representation of a class file to read.
84	* @return An appropriate class reader.
85	*/
86	public static ClassReader of(byte[] binaryRepresentation) {
87	ClassFileVersion classFileVersion = ClassFileVersion.ofClassFile(binaryRepresentation), latest = ClassFileVersion.latest();	1✔
88	if (classFileVersion.isGreaterThan(latest)) {	1✔
89	if (EXPERIMENTAL) {	×
90	binaryRepresentation[4] = (byte) (latest.getMinorVersion() >>> 8);	×
91	binaryRepresentation[5] = (byte) latest.getMinorVersion();	×
92	binaryRepresentation[6] = (byte) (latest.getMajorVersion() >>> 8);	×
93	binaryRepresentation[7] = (byte) latest.getMajorVersion();	×
94	ClassReader classReader = new ClassReader(binaryRepresentation);	×
95	binaryRepresentation[4] = (byte) (classFileVersion.getMinorVersion() >>> 8);	×
96	binaryRepresentation[5] = (byte) classFileVersion.getMinorVersion();	×
97	binaryRepresentation[6] = (byte) (classFileVersion.getMajorVersion() >>> 8);	×
98	binaryRepresentation[7] = (byte) classFileVersion.getMajorVersion();	×
99	return classReader;	×
100	} else {
101	throw new IllegalArgumentException(classFileVersion	×
102	+ " is not supported by the current version of Byte Buddy which officially supports " + latest
103	+ " - update Byte Buddy or set " + EXPERIMENTAL_PROPERTY + " as a VM property");
104	}
105	} else {
106	return new ClassReader(binaryRepresentation);	1✔
107	}
108	}
109	}

raphw / byte-buddy / #641

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