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java/org/apache/catalina/webresources/TomcatJarInputStream.java

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+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You 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 org.apache.catalina.webresources;
+
+import java.io.IOException;
+import java.io.InputStream;
+import java.util.jar.JarEntry;
+import java.util.jar.JarInputStream;
+import java.util.zip.ZipEntry;
+
+/**
+ * The purpose of this sub-class is to obtain references to the JarEntry objects
+ * for META-INF/ and META-INF/MANIFEST.MF that are otherwise swallowed by the
+ * JarInputStream implementation.
+ */
+public class TomcatJarInputStream extends JarInputStream {
+
+    private JarEntry metaInfEntry;
+    private JarEntry manifestEntry;
+
+
+    TomcatJarInputStream(InputStream in) throws IOException {
+        super(in);
+    }
+
+
+    @Override
+    protected ZipEntry createZipEntry(String name) {
+        ZipEntry ze = super.createZipEntry(name);
+        if (metaInfEntry == null && "META-INF/".equals(name)) {
+            metaInfEntry = (JarEntry) ze;
+        } else if (manifestEntry == null && "META-INF/MANIFESR.MF".equals(name)) {
+            manifestEntry = (JarEntry) ze;
+        }
+        return ze;
+    }
+
+
+    JarEntry getMetaInfEntry() {
+        return metaInfEntry;
+    }
+
+
+    JarEntry getManifestEntry() {
+        return manifestEntry;
+    }
+}