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/*
* Fabric3
* Copyright (c) 2009-2015 Metaform Systems
*
* Licensed 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.
* Portions originally based on Apache Tuscany 2007
* licensed under the Apache 2.0 license.
*/
package org.fabric3.contribution.archive;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.InputStream;
import java.net.MalformedURLException;
import java.net.URI;
import java.net.URL;
import java.util.Collections;
import java.util.List;
import java.util.function.Consumer;
import java.util.jar.Manifest;
import java.util.regex.Pattern;
import java.util.zip.ZipEntry;
import java.util.zip.ZipInputStream;
import org.fabric3.api.host.Fabric3Exception;
import org.fabric3.api.host.stream.Source;
import org.fabric3.api.host.stream.UrlSource;
import org.fabric3.spi.contribution.ContentTypeResolver;
import org.fabric3.spi.contribution.Contribution;
import org.fabric3.spi.contribution.ContributionManifest;
import org.fabric3.spi.contribution.JavaArtifactIntrospector;
import org.fabric3.spi.contribution.Resource;
import org.fabric3.spi.contribution.archive.ArchiveContributionHandler;
import org.fabric3.spi.contribution.manifest.JarManifestHandler;
import org.fabric3.spi.introspection.DefaultIntrospectionContext;
import org.fabric3.spi.introspection.IntrospectionContext;
import org.fabric3.spi.introspection.xml.Loader;
import org.oasisopen.sca.annotation.EagerInit;
import org.oasisopen.sca.annotation.Reference;
/**
* Introspects a Zip-based contribution, delegating to ResourceProcessors for handling leaf-level children.
*/
@EagerInit
public class ZipContributionHandler implements ArchiveContributionHandler {
private List manifestHandlers = Collections.emptyList();
private Loader loader;
private List artifactIntrospectors = Collections.emptyList();
private ContentTypeResolver contentTypeResolver;
public ZipContributionHandler(@Reference Loader loader, @Reference ContentTypeResolver contentTypeResolver) {
this.loader = loader;
this.contentTypeResolver = contentTypeResolver;
}
@Reference
public void setArtifactIntrospectors(List introspectors) {
this.artifactIntrospectors = introspectors;
}
@Reference(required = false)
public void setManifestHandlers(List manifestHandlers) {
this.manifestHandlers = manifestHandlers;
}
public boolean canProcess(Contribution contribution) {
String sourceUrl = contribution.getLocation().toString();
return sourceUrl.endsWith(".jar") || sourceUrl.endsWith(".zip");
}
public void processManifest(Contribution contribution, IntrospectionContext context) {
URL sourceUrl = contribution.getLocation();
try {
URL manifestUrl = new URL("jar:" + sourceUrl.toExternalForm() + "!/META-INF/sca-contribution.xml");
ClassLoader cl = getClass().getClassLoader();
URI uri = contribution.getUri();
IntrospectionContext childContext = new DefaultIntrospectionContext(uri, cl);
Source source = new UrlSource(manifestUrl);
ContributionManifest manifest = loader.load(source, ContributionManifest.class, childContext);
if (childContext.hasErrors()) {
context.addErrors(childContext.getErrors());
}
if (childContext.hasWarnings()) {
context.addWarnings(childContext.getWarnings());
}
if (childContext.hasErrors() || childContext.hasWarnings()) {
return;
}
contribution.setManifest(manifest);
} catch (Fabric3Exception e) {
if (e.getCause() instanceof FileNotFoundException) {
// ignore no manifest found
} else {
throw e;
}
} catch (MalformedURLException e) {
// ignore no manifest found
}
InputStream manifestStream = null;
try {
URL jarUrl = new URL("jar:" + sourceUrl.toExternalForm() + "!/META-INF/MANIFEST.MF");
manifestStream = jarUrl.openStream();
Manifest jarManifest = new Manifest(manifestStream);
for (JarManifestHandler handler : manifestHandlers) {
handler.processManifest(contribution.getManifest(), jarManifest, context);
}
} catch (MalformedURLException | FileNotFoundException e) {
// ignore no manifest found
} catch (IOException e) {
throw new Fabric3Exception(e);
} finally {
try {
if (manifestStream != null) {
manifestStream.close();
}
} catch (IOException e) {
// ignore
e.printStackTrace();
}
}
}
public void iterateArtifacts(Contribution contribution, Consumer callback, IntrospectionContext context) {
URL location = contribution.getLocation();
ContributionManifest manifest = contribution.getManifest();
ZipInputStream zipStream = null;
try {
zipStream = new ZipInputStream(location.openStream());
while (true) {
ZipEntry entry = zipStream.getNextEntry();
if (entry == null) {
// EOF
break;
}
if (entry.isDirectory()) {
continue;
}
String name = entry.getName();
if (name.contains("META-INF/sca-contribution.xml")) {
// don't index the manifest
continue;
}
if (exclude(manifest, entry)) {
continue;
}
if (name.endsWith(".class")) {
URL entryUrl = new URL("jar:" + location.toExternalForm() + "!/" + name);
name = name.replace("/", ".").substring(0, name.length() - 6); // note '/' must be used as archives always use '/' for a separator
Class clazz;
try {
clazz = context.getClassLoader().loadClass(name);
} catch (ClassNotFoundException | NoClassDefFoundError e) {
// ignore since the class may reference another class not present in the contribution
continue;
}
Resource resource = null;
for (JavaArtifactIntrospector introspector : artifactIntrospectors) {
resource = introspector.inspect(clazz, entryUrl, contribution, context);
if (resource != null) {
break;
}
}
if (resource == null) {
continue;
}
contribution.addResource(resource);
callback.accept(resource);
} else {
String contentType = contentTypeResolver.getContentType(name);
if (contentType == null) {
// skip entry if we don't recognize the content type
continue;
}
URL entryUrl = new URL("jar:" + location.toExternalForm() + "!/" + name);
UrlSource source = new UrlSource(entryUrl);
Resource resource = new Resource(contribution, source, contentType);
contribution.addResource(resource);
callback.accept(resource);
}
}
} catch (IOException e) {
throw new Fabric3Exception(e);
} finally {
try {
if (zipStream != null) {
zipStream.close();
}
} catch (IOException e) {
e.printStackTrace();
}
}
}
private boolean exclude(ContributionManifest manifest, ZipEntry entry) {
for (Pattern pattern : manifest.getScanExcludes()) {
if (pattern.matcher(entry.getName()).matches()) {
return true;
}
}
return false;
}
}
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