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Closes gh-22998
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78
...spring-boot-loader/src/main/java/org/springframework/boot/loader/jar/AbstractJarFile.java
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| @@ -0,0 +1,78 @@ | ||
| /* | ||
| * Copyright 2012-2020 the original author or authors. | ||
| * | ||
| * 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 | ||
| * | ||
| * https://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. | ||
| */ | ||
|
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| package org.springframework.boot.loader.jar; | ||
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| import java.io.File; | ||
| import java.io.IOException; | ||
| import java.io.InputStream; | ||
| import java.net.MalformedURLException; | ||
| import java.net.URL; | ||
| import java.security.Permission; | ||
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| /** | ||
| * Base class for extended variants of {@link java.util.jar.JarFile}. | ||
| * | ||
| * @author Phillip Webb | ||
| */ | ||
| abstract class AbstractJarFile extends java.util.jar.JarFile { | ||
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| /** | ||
| * Create a new {@link AbstractJarFile}. | ||
| * @param file the root jar file. | ||
| * @throws IOException on IO error | ||
| */ | ||
| AbstractJarFile(File file) throws IOException { | ||
| super(file); | ||
| } | ||
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| /** | ||
| * Return a URL that can be used to access this JAR file. NOTE: the specified URL | ||
| * cannot be serialized and or cloned. | ||
| * @return the URL | ||
| * @throws MalformedURLException if the URL is malformed | ||
| */ | ||
| protected abstract URL getUrl() throws MalformedURLException; | ||
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| /** | ||
| * Return the {@link JarFileType} of this instance. | ||
| * @return the jar file type | ||
| */ | ||
| protected abstract JarFileType getType(); | ||
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| /** | ||
| * Return the security permission for this JAR. | ||
| * @return the security permission. | ||
| */ | ||
| protected abstract Permission getPermission(); | ||
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| /** | ||
| * Return an {@link InputStream} for the entire jar contents. | ||
| * @return the contents input stream | ||
| * @throws IOException on IO error | ||
| */ | ||
| protected abstract InputStream getInputStream() throws IOException; | ||
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| /** | ||
| * The type of a {@link JarFile}. | ||
| */ | ||
| enum JarFileType { | ||
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| DIRECT, NESTED_DIRECTORY, NESTED_JAR | ||
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| } | ||
|
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| } |
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120 changes: 120 additions & 0 deletions
120
.../spring-boot-loader/src/main/java/org/springframework/boot/loader/jar/JarFileWrapper.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,120 @@ | ||
| /* | ||
| * Copyright 2012-2020 the original author or authors. | ||
| * | ||
| * 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 | ||
| * | ||
| * https://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. | ||
| */ | ||
|
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| package org.springframework.boot.loader.jar; | ||
|
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| import java.io.IOException; | ||
| import java.io.InputStream; | ||
| import java.net.MalformedURLException; | ||
| import java.net.URL; | ||
| import java.security.Permission; | ||
| import java.util.Enumeration; | ||
| import java.util.jar.JarEntry; | ||
| import java.util.jar.Manifest; | ||
| import java.util.zip.ZipEntry; | ||
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| /** | ||
| * A wrapper used to create a copy of a {@link JarFile} so that it can be safely closed | ||
| * without closing the original. | ||
| * | ||
| * @author Phillip Webb | ||
| */ | ||
| class JarFileWrapper extends AbstractJarFile { | ||
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| private final JarFile parent; | ||
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| JarFileWrapper(JarFile parent) throws IOException { | ||
| super(parent.getRootJarFile().getFile()); | ||
| this.parent = parent; | ||
| super.close(); | ||
| } | ||
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| @Override | ||
| protected URL getUrl() throws MalformedURLException { | ||
| return this.parent.getUrl(); | ||
| } | ||
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| @Override | ||
| protected JarFileType getType() { | ||
| return this.parent.getType(); | ||
| } | ||
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| @Override | ||
| protected Permission getPermission() { | ||
| return this.parent.getPermission(); | ||
| } | ||
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| @Override | ||
| public Manifest getManifest() throws IOException { | ||
| return this.parent.getManifest(); | ||
| } | ||
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| @Override | ||
| public Enumeration<JarEntry> entries() { | ||
| return this.parent.entries(); | ||
| } | ||
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| @Override | ||
| public JarEntry getJarEntry(String name) { | ||
| return this.parent.getJarEntry(name); | ||
| } | ||
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| @Override | ||
| public ZipEntry getEntry(String name) { | ||
| return this.parent.getEntry(name); | ||
| } | ||
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| @Override | ||
| protected InputStream getInputStream() throws IOException { | ||
| return this.parent.getInputStream(); | ||
| } | ||
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| @Override | ||
| public synchronized InputStream getInputStream(ZipEntry ze) throws IOException { | ||
| return this.parent.getInputStream(ze); | ||
| } | ||
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| @Override | ||
| public String getComment() { | ||
| return this.parent.getComment(); | ||
| } | ||
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| @Override | ||
| public int size() { | ||
| return this.parent.size(); | ||
| } | ||
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| @Override | ||
| public String toString() { | ||
| return this.parent.toString(); | ||
| } | ||
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| @Override | ||
| public String getName() { | ||
| return this.parent.getName(); | ||
| } | ||
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| static JarFile unwrap(java.util.jar.JarFile jarFile) { | ||
| if (jarFile instanceof JarFile) { | ||
| return (JarFile) jarFile; | ||
| } | ||
| if (jarFile instanceof JarFileWrapper) { | ||
| return unwrap(((JarFileWrapper) jarFile).parent); | ||
| } | ||
| throw new IllegalStateException("Not a JarFile or Wrapper"); | ||
| } | ||
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| } |
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