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java/org/apache/catalina/ant/ValidatorTask.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.ant;
+
+
+import java.io.BufferedInputStream;
+import java.io.File;
+import java.io.FileInputStream;
+import java.io.InputStream;
+
+import org.apache.catalina.Globals;
+import org.apache.tomcat.util.descriptor.DigesterFactory;
+import org.apache.tomcat.util.digester.Digester;
+import org.apache.tools.ant.BuildException;
+import org.xml.sax.InputSource;
+
+
+/**
+ * Task for validating a web application deployment descriptor, using XML
+ * schema validation.
+ *
+ * @author Remy Maucherat
+ * @since 5.0
+ */
+public class ValidatorTask extends BaseRedirectorHelperTask {
+
+
+    // ----------------------------------------------------- Instance Variables
+
+
+    // ------------------------------------------------------------- Properties
+
+
+    /**
+     * The path to the webapp directory.
+     */
+    protected String path = null;
+
+    public String getPath() {
+        return this.path;
+    }
+
+    public void setPath(String path) {
+        this.path = path;
+    }
+
+
+    // --------------------------------------------------------- Public Methods
+
+    /**
+     * Execute the specified command.  This logic only performs the common
+     * attribute validation required by all subclasses; it does not perform
+     * any functional logic directly.
+     *
+     * @exception BuildException if a validation error occurs
+     */
+    @Override
+    public void execute() throws BuildException {
+
+        if (path == null) {
+            throw new BuildException("Must specify 'path'");
+        }
+
+        File file = new File(path, "WEB-INF/web.xml");
+        if (!file.canRead()) {
+            throw new BuildException("Cannot find web.xml");
+        }
+
+        // Commons-logging likes having the context classloader set
+        ClassLoader oldCL = Thread.currentThread().getContextClassLoader();
+        Thread.currentThread().setContextClassLoader
+            (ValidatorTask.class.getClassLoader());
+
+        // Called through trusted manager interface. If running under a
+        // SecurityManager assume that untrusted applications may be deployed.
+        Digester digester = DigesterFactory.newDigester(
+                true, true, null, Globals.IS_SECURITY_ENABLED);
+        try (InputStream stream = new BufferedInputStream(new FileInputStream(file.getCanonicalFile()))) {
+            InputSource is = new InputSource(file.toURI().toURL().toExternalForm());
+            is.setByteStream(stream);
+            digester.parse(is);
+            handleOutput("web.xml validated");
+        } catch (Exception e) {
+            if (isFailOnError()) {
+                throw new BuildException("Validation failure", e);
+            } else {
+                handleErrorOutput("Validation failure: " + e);
+            }
+        } finally {
+            Thread.currentThread().setContextClassLoader(oldCL);
+            closeRedirector();
+        }
+
+    }
+
+
+}