/*
* 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.sling.installer.core.impl;
import java.io.IOException;
import java.io.InputStream;
import java.lang.reflect.Field;
import java.util.jar.JarInputStream;
import java.util.jar.Manifest;
import org.apache.sling.installer.api.tasks.RegisteredResource;
import org.osgi.framework.Constants;
import org.slf4j.Logger;
public class Util {
/**
* Set a (final) field during deserialization.
*/
public static void setField(final Object obj, final String name, final Object value)
throws IOException {
try {
final Field field = obj.getClass().getDeclaredField(name);
if ( field == null ) {
throw new IOException("Field " + name + " not found in class " + obj.getClass());
}
field.setAccessible(true);
field.set(obj, value);
} catch (final SecurityException e) {
throw (IOException)new IOException().initCause(e);
} catch (final NoSuchFieldException e) {
throw (IOException)new IOException().initCause(e);
} catch (final IllegalArgumentException e) {
throw (IOException)new IOException().initCause(e);
} catch (final IllegalAccessException e) {
throw (IOException)new IOException().initCause(e);
}
}
/**
* Read the manifest from supplied input stream, which is closed before return.
*/
private static Manifest getManifest(final RegisteredResource rsrc, final Logger logger)
throws IOException {
final InputStream ins = rsrc.getInputStream();
Manifest result = null;
if ( ins != null ) {
JarInputStream jis = null;
try {
jis = new JarInputStream(ins);
result= jis.getManifest();
// SLING-2288 : if this is a jar file, but the manifest is not the first entry
// log a warning
if ( rsrc.getURL().endsWith(".jar") && result == null ) {
logger.warn("Resource {} does not have the manifest as its first entry in the archive. If this is " +
"a bundle, make sure to put the manifest first in the jar file.", rsrc.getURL());
}
} finally {
// close the jar stream or the inputstream, if the jar
// stream is set, we don't need to close the input stream
// since closing the jar stream closes the input stream
if (jis != null) {
try {
jis.close();
} catch (IOException ignore) {
}
} else {
try {
ins.close();
} catch (IOException ignore) {
}
}
}
}
return result;
}
final static public class BundleHeaders {
public String symbolicName;
public String version;
public String activationPolicy; // optional
}
/**
* Read the bundle info from the manifest (if available)
*/
public static BundleHeaders readBundleHeaders(final RegisteredResource resource, final Logger logger) {
try {
final Manifest m = Util.getManifest(resource, logger);
if (m != null) {
final String sn = m.getMainAttributes().getValue(Constants.BUNDLE_SYMBOLICNAME);
if (sn != null) {
final String v = m.getMainAttributes().getValue(Constants.BUNDLE_VERSION);
if (v != null) {
final int paramPos = sn.indexOf(';');
final String symbolicName = (paramPos == -1 ? sn : sn.substring(0, paramPos));
final BundleHeaders headers = new BundleHeaders();
headers.symbolicName = symbolicName;
headers.version = v;
// check for activation policy
final String actPolicy = m.getMainAttributes().getValue(Constants.BUNDLE_ACTIVATIONPOLICY);
if ( Constants.ACTIVATION_LAZY.equals(actPolicy) ) {
headers.activationPolicy = actPolicy;
}
return headers;
}
}
}
} catch (final IOException ignore) {
// ignore
}
return null;
}
}