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@@ -0,0 +1,119 @@ |
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/* |
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* Copyright 2004 The Apache Software Foundation |
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* |
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* Licensed under the Apache License, Version 2.0 (the "License"); |
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* you may not use this file except in compliance with the License. |
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* You may obtain a copy of the License at |
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* |
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* http://www.apache.org/licenses/LICENSE-2.0 |
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* |
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* Unless required by applicable law or agreed to in writing, software |
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* distributed under the License is distributed on an "AS IS" BASIS, |
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
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* See the License for the specific language governing permissions and |
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* limitations under the License. |
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* |
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*/ |
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package org.apache.tools.ant.taskdefs; |
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import org.apache.tools.ant.BuildException; |
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import org.apache.tools.ant.Project; |
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import java.io.File; |
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import java.io.IOException; |
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import java.util.zip.ZipEntry; |
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import java.util.zip.ZipFile; |
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import java.util.Enumeration; |
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/** |
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* Checks whether a jarfile is signed: if the name of the |
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* signature is passed, the file is checked for presence of that |
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* particular signature; otherwise the file is checked for the |
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* existence of any signature. |
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*/ |
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public class IsSigned extends ConditionAndTask { |
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private static final String SIG_START = "META-INF/"; |
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private static final String SIG_END = ".SF"; |
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private String name; |
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private File file; |
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/** |
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* The jarfile that is to be tested for the presence |
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* of a signature. |
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* |
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* @param file jarfile to be tested. |
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*/ |
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public void setFile(File file) { |
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this.file = file; |
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} |
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/** |
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* The signature name to check jarfile for. |
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* |
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* @param name signature to look for. |
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*/ |
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public void setName(String name) { |
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this.name = name; |
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} |
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/** |
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* Returns <CODE>true</code> if the file exists and is signed with |
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* the signature specified, or, if <CODE>name</code> wasn't |
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* specified, if the file contains a signature. |
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* @return true if the file is signed. |
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*/ |
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protected boolean evaluate() { |
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if (file == null) { |
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throw new BuildException("The file attribute must be set."); |
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} |
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if (file != null && !file.exists()) { |
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log("The file \"" + file.getAbsolutePath() |
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+ "\" does not exist.", Project.MSG_VERBOSE); |
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return false; |
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} |
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ZipFile jarFile = null; |
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try { |
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jarFile = new ZipFile(file); |
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if (null == name) { |
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Enumeration entries = jarFile.entries(); |
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while (entries.hasMoreElements()) { |
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String name = ((ZipEntry) entries.nextElement()).getName(); |
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if (name.startsWith(SIG_START) && name.endsWith(SIG_END)) { |
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log("File \"" + file.getAbsolutePath() |
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+ "\" is signed.", Project.MSG_VERBOSE); |
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return true; |
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} |
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} |
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return false; |
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} else { |
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boolean shortSig = jarFile.getEntry(SIG_START |
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+ name.toUpperCase() |
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+ SIG_END) != null; |
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boolean longSig = jarFile.getEntry(SIG_START |
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+ name.substring(0, 8).toUpperCase() |
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+ SIG_END) != null; |
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if (shortSig || longSig) { |
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log("File \"" + file.getAbsolutePath() |
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+ "\" is signed.", Project.MSG_VERBOSE); |
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return true; |
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} else { |
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return false; |
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} |
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} |
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} catch (IOException e) { |
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log("Got IOException reading file \"" + file.getAbsolutePath() |
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+ "\"" + e, Project.MSG_VERBOSE); |
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return false; |
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} finally { |
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if (jarFile != null) { |
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try { |
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jarFile.close(); |
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} catch (IOException e) { |
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// Ignored |
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} |
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} |
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} |
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} |
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} |