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java/org/apache/catalina/webresources/JarWarResource.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.JarFile;
+import java.util.jar.JarInputStream;
+
+import org.apache.juli.logging.Log;
+import org.apache.juli.logging.LogFactory;
+import org.apache.tomcat.util.buf.UriUtil;
+
+/**
+ * Represents a single resource (file or directory) that is located within a
+ * JAR that in turn is located in a WAR file.
+ */
+public class JarWarResource extends AbstractArchiveResource {
+
+    private static final Log log = LogFactory.getLog(JarWarResource.class);
+
+    private final String archivePath;
+
+    public JarWarResource(AbstractArchiveResourceSet archiveResourceSet, String webAppPath,
+            String baseUrl, JarEntry jarEntry, String archivePath) {
+
+        super(archiveResourceSet, webAppPath,
+                "jar:war:" + baseUrl + UriUtil.getWarSeparator() + archivePath + "!/",
+                jarEntry, "war:" + baseUrl + UriUtil.getWarSeparator() + archivePath);
+        this.archivePath = archivePath;
+    }
+
+    @Override
+    protected JarInputStreamWrapper getJarInputStreamWrapper() {
+        JarFile warFile = null;
+        JarInputStream jarIs = null;
+        JarEntry entry = null;
+        try {
+            warFile = getArchiveResourceSet().openJarFile();
+            JarEntry jarFileInWar = warFile.getJarEntry(archivePath);
+            InputStream isInWar = warFile.getInputStream(jarFileInWar);
+
+            jarIs = new JarInputStream(isInWar);
+            entry = jarIs.getNextJarEntry();
+            while (entry != null &&
+                    !entry.getName().equals(getResource().getName())) {
+                entry = jarIs.getNextJarEntry();
+            }
+
+            if (entry == null) {
+                return null;
+            }
+
+            return new JarInputStreamWrapper(entry, jarIs);
+        } catch (IOException e) {
+            if (log.isDebugEnabled()) {
+                log.debug(sm.getString("jarResource.getInputStreamFail",
+                        getResource().getName(), getBaseUrl()), e);
+            }
+            // Ensure jarIs is closed if there is an exception
+            entry = null;
+            return null;
+        } finally {
+            if (entry == null) {
+                if (jarIs != null) {
+                    try {
+                        jarIs.close();
+                    } catch (IOException ioe) {
+                        // Ignore
+                    }
+                }
+                if (warFile != null) {
+                    getArchiveResourceSet().closeJarFile();
+                }
+            }
+        }
+    }
+
+    @Override
+    protected Log getLog() {
+        return log;
+    }
+}