public static BundleWiringDTO newBundleWiringDTO(BundleRevision revision) {
if (revision == null) {
return null;
}
BundleWiringDTO dto = new DTOBuilder().getBundleWiringDTO(revision.getWiring());
return dto;
}
public boolean isAssignableTo(Bundle requester, String className) {
// Always return true if the requester is the same as the provider.
if (requester == m_bundle) {
return true;
}
// Boolean flag.
boolean allow = true;
// Get the package.
String pkgName = Util.getClassPackage(className);
// Get package wiring from service requester.
BundleRevision requesterRevision = requester.adapt(BundleRevision.class);
BundleWire requesterWire = Util.getWire(requesterRevision, pkgName);
BundleCapability requesterCap = Util.getPackageCapability(requesterRevision, pkgName);
// Get package wiring from service provider.
BundleRevision providerRevision = m_bundle.adapt(BundleRevision.class);
BundleWire providerWire = Util.getWire(providerRevision, pkgName);
BundleCapability providerCap = Util.getPackageCapability(providerRevision, pkgName);
// There are four situations that may occur here:
// 1. Neither the requester, nor provider have wires for the package.
// 2. The requester does not have a wire for the package.
// 3. The provider does not have a wire for the package.
// 4. Both the requester and provider have a wire for the package.
// For case 1, if the requester does not have access to the class at
// all, we assume it is using reflection and do not filter. If the
// requester does have access to the class, then we make sure it is
// the same class as the service. For case 2, we do not filter if the
// requester is the exporter of the package to which the provider of
// the service is wired. Otherwise, as in case 1, if the requester
// does not have access to the class at all, we do not filter, but if
// it does have access we check if it is the same class accessible to
// the providing revision. For case 3, the provider will not have a wire
// if it is exporting the package, so we determine if the requester
// is wired to it or somehow using the same class. For case 4, we
// simply compare the exporting revisions from the package wiring to
// determine if we need to filter the service reference.
// Case 1: Both requester and provider have no wire.
if ((requesterWire == null) && (providerWire == null)) {
// If requester has no access then true, otherwise service
// registration must have same class as requester.
try {
Class requestClass =
((BundleWiringImpl) requesterRevision.getWiring()).getClassByDelegation(className);
allow = getRegistration().isClassAccessible(requestClass);
} catch (Exception ex) {
// Requester has no access to the class, so allow it, since
// we assume the requester is using reflection.
allow = true;
}
}
// Case 2: Requester has no wire, but provider does.
else if ((requesterWire == null) && (providerWire != null)) {
// If the requester exports the package, then the provider must
// be wired to it.
if (requesterCap != null) {
allow = providerWire.getProviderWiring().getRevision().equals(requesterRevision);
}
// Otherwise, check if the requester has access to the class and,
// if so, if it is the same class as the provider.
else {
try {
// Try to load class from requester.
Class requestClass =
((BundleWiringImpl) requesterRevision.getWiring()).getClassByDelegation(className);
try {
// If requester has access to the class, verify it is the
// same class as the provider.
allow =
(((BundleWiringImpl) providerRevision.getWiring()).getClassByDelegation(className)
== requestClass);
} catch (Exception ex) {
allow = false;
}
} catch (Exception ex) {
// Requester has no access to the class, so allow it, since
// we assume the requester is using reflection.
allow = true;
}
}
}
// Case 3: Requester has a wire, but provider does not.
else if ((requesterWire != null) && (providerWire == null)) {
// If the provider exports the package, then the requester must
// be wired to it.
if (providerCap != null) {
allow = requesterWire.getProviderWiring().getRevision().equals(providerRevision);
}
// If the provider is not the exporter of the requester's package,
// then try to use the service registration to see if the requester's
// class is accessible.
else {
try {
// Load the class from the requesting bundle.
Class requestClass =
((BundleWiringImpl) requesterRevision.getWiring()).getClassByDelegation(className);
// Get the service registration and ask it to check
// if the service object is assignable to the requesting
// bundle's class.
allow = getRegistration().isClassAccessible(requestClass);
} catch (Exception ex) {
// Filter to be safe.
allow = false;
}
}
}
// Case 4: Both requester and provider have a wire.
else {
// Include service reference if the wires have the
// same source revision.
allow =
providerWire
.getProviderWiring()
.getRevision()
.equals(requesterWire.getProviderWiring().getRevision());
}
return allow;
}
private List<Definition> resolveAspectsForBundle(
final List<String> fingerprintElements,
final Bundle bundle,
final BundleRevision bundleRevision) {
final List<Definition> result = new ArrayList<Definition>();
final BundleWiring wiring = bundleRevision.getWiring();
if (wiring != null && weavingBundleContext != null) {
Definition aspects = null;
// fragments
for (final BundleWire hostWire : wiring.getProvidedWires(HostNamespace.HOST_NAMESPACE)) {
final Bundle fragmentBundle = hostWire.getRequirer().getBundle();
if (fragmentBundle != null) {
aspects = aspectAdmin.getAspectDefinition(fragmentBundle);
if (aspects != null) {
result.add(aspects);
fingerprintElements.add(
fragmentBundle.getSymbolicName()
+ ":" //$NON-NLS-1$
+ hostWire.getRequirer().getVersion().toString());
}
}
}
// required bundles
final List<BundleWire> requiredBundles =
wiring.getRequiredWires(BundleNamespace.BUNDLE_NAMESPACE);
ManifestElement[] requireHeaders = null;
if (!requiredBundles.isEmpty()) {
try {
requireHeaders =
ManifestElement.parseHeader(
Constants.REQUIRE_BUNDLE,
bundle.getHeaders("").get(Constants.REQUIRE_BUNDLE)); // $NON-NLS-1$
} catch (final BundleException e) {
}
}
for (final BundleWire requiredBundleWire : requiredBundles) {
final Bundle requiredBundle = requiredBundleWire.getProvider().getBundle();
if (requiredBundle != null) {
final int applyPolicy =
getApplyAspectsPolicy(requireHeaders, requiredBundle.getSymbolicName());
aspects = aspectAdmin.resolveRequiredBundle(requiredBundle, applyPolicy);
if (aspects != null) {
result.add(aspects);
fingerprintElements.add(
requiredBundle.getSymbolicName()
+ ":" //$NON-NLS-1$
+ requiredBundleWire.getProvider().getVersion().toString());
}
}
}
// imported packages
final List<BundleWire> importedPackages =
wiring.getRequiredWires(PackageNamespace.PACKAGE_NAMESPACE);
ManifestElement[] importHeaders = null;
if (!importedPackages.isEmpty()) {
try {
importHeaders =
ManifestElement.parseHeader(
Constants.IMPORT_PACKAGE,
bundle.getHeaders("").get(Constants.IMPORT_PACKAGE)); // $NON-NLS-1$
} catch (final BundleException e) {
}
}
for (final BundleWire importPackageWire : importedPackages) {
final Bundle exportingBundle = importPackageWire.getProvider().getBundle();
if (exportingBundle != null) {
final String importedPackage =
(String)
importPackageWire
.getCapability()
.getAttributes()
.get(PackageNamespace.PACKAGE_NAMESPACE);
final int applyPolicy = getApplyAspectsPolicy(importHeaders, importedPackage);
aspects =
aspectAdmin.resolveImportedPackage(exportingBundle, importedPackage, applyPolicy);
if (aspects != null) {
result.add(aspects);
final Object v =
importPackageWire
.getCapability()
.getAttributes()
.get(PackageNamespace.CAPABILITY_VERSION_ATTRIBUTE);
final String version = v == null ? Version.emptyVersion.toString() : v.toString();
fingerprintElements.add(
importedPackage
+ ":" //$NON-NLS-1$
+ version);
}
}
}
// supplementers
final Supplementer[] supplementers =
this.supplementerRegistry.getSupplementers(bundleRevision.getBundle().getBundleId());
for (int i = 0; i < supplementers.length; i++) {
aspects =
aspectAdmin.getExportedAspectDefinitions(supplementers[i].getSupplementerBundle());
if (aspects != null) {
result.add(aspects);
fingerprintElements.add(
supplementers[i].getSymbolicName()
+ ":" //$NON-NLS-1$
+ getBundleVersion(supplementers[i].getSupplementerBundle()));
}
}
// this bundle
aspects = aspectAdmin.getAspectDefinition(bundle);
if (aspects != null) {
final String finishedValue =
bundle
.getHeaders("")
.get( //$NON-NLS-1$
AspectAdmin.AOP_BUNDLE_FINISHED_HEADER);
if (finishedValue == null || !AspectAdmin.AOP_BUNDLE_FINISHED_VALUE.equals(finishedValue)) {
result.add(aspects);
fingerprintElements.add(
bundle.getSymbolicName()
+ ":" //$NON-NLS-1$
+ bundleRevision.getVersion().toString());
}
}
}
return result;
}
