public byte[] instrumentClass(java.lang.ClassLoader deferTo, String class_name) {
if (debug) ; // System.out.println(" getResource <" + class_name +
// "> <" +
// deferTo.getResource(resourceNameForClassName(class_name))
// + ">");
InputStream s = deferTo.getResourceAsStream(resourceNameForClassName(class_name));
if (s == null) return null;
// try to load it
// here we might cache modification dates
if (debug) ; // System.out.println(indentation + "#" +
// (class_name.replace('.', File.separatorChar))
// + ">");
BufferedInputStream stream = new BufferedInputStream(s, 80000);
if (stream == null) return null;
try {
byte[] a = new byte[stream.available()];
stream.read(a);
if (debug) ; // System.out.println(" about to instrument <"
// + class_name + "> inside <" + this +
// "> !! ");
a = instrumentBytecodes(a, class_name, deferTo);
return a;
} catch (IOException e) {
e.printStackTrace();
}
return null;
}
/**
* Find a package by name in the callers {@code ClassLoader} instance. The callers {@code
* ClassLoader} instance is used to find the package instance corresponding to the named class. If
* the callers {@code ClassLoader} instance is null then the set of packages loaded by the system
* {@code ClassLoader} instance is searched to find the named package.
*
* <p>Packages have attributes for versions and specifications only if the class loader created
* the package instance with the appropriate attributes. Typically, those attributes are defined
* in the manifests that accompany the classes.
*
* @param name a package name, for example, java.lang.
* @return the package of the requested name. It may be null if no package information is
* available from the archive or codebase.
*/
public static Package getPackage(String name) {
ClassLoader l = ClassLoader.getCallerClassLoader();
if (l != null) {
return l.getPackage(name);
} else {
return getSystemPackage(name);
}
}
/**
* Get all the packages currently known for the caller's {@code ClassLoader} instance. Those
* packages correspond to classes loaded via or accessible by name to that {@code ClassLoader}
* instance. If the caller's {@code ClassLoader} instance is the bootstrap {@code ClassLoader}
* instance, which may be represented by {@code null} in some implementations, only packages
* corresponding to classes loaded by the bootstrap {@code ClassLoader} instance will be returned.
*
* @return a new array of packages known to the callers {@code ClassLoader} instance. An zero
* length array is returned if none are known.
*/
public static Package[] getPackages() {
ClassLoader l = ClassLoader.getCallerClassLoader();
if (l != null) {
return l.getPackages();
} else {
return getSystemPackages();
}
}
/**
* Returns the {@code Package} of which the class represented by this {@code Class} is a member.
* Returns {@code null} if no {@code Package} object was created by the class loader of the class.
*
* @return Package the {@code Package} of which this {@code Class} is a member or {@code null}.
*/
public Package getPackage() {
// TODO This might be a hack, but the VM doesn't have the necessary info.
ClassLoader loader = getClassLoader();
if (loader != null) {
String name = getName();
int dot = name.lastIndexOf('.');
return (dot != -1 ? loader.getPackage(name.substring(0, dot)) : null);
}
return null;
}
class PkgConst {
static final String CRT_TYPE = "X.509";
static final String CRT_FILE =
java.lang.ClassLoader.getSystemResource("com/demoapp/demo/https/httpsfile/https.crt")
.getFile();
static final String KEYSTORE_TYPE = "JKS";
static final String KEYSTORE_FILE =
java.lang.ClassLoader.getSystemResource("com/demoapp/demo/https/httpsfile/https.keystore")
.getFile();
static final String KEYSTORE_PASSWORD = "******";
static final String KEYSTORE_ALIAS = "yongnian.jiang";
}
/**
* Get the package for the specified class. The class's class loader is used to find the package
* instance corresponding to the specified class. If the class loader is the bootstrap class
* loader, which may be represented by {@code null} in some implementations, then the set of
* packages loaded by the bootstrap class loader is searched to find the package.
*
* <p>Packages have attributes for versions and specifications only if the class loader created
* the package instance with the appropriate attributes. Typically those attributes are defined in
* the manifests that accompany the classes.
*
* @param class the class to get the package of.
* @return the package of the class. It may be null if no package information is available from
* the archive or codebase.
*/
static Package getPackage(Class<?> c) {
String name = c.getName();
int i = name.lastIndexOf('.');
if (i != -1) {
name = name.substring(0, i);
ClassLoader cl = c.getClassLoader();
if (cl != null) {
return cl.getPackage(name);
} else {
return getSystemPackage(name);
}
} else {
return null;
}
}
/**
* Returns a {@code Class} object which represents the class with the specified name. The name
* should be the name of a class as described in the {@link Class class definition}, however
* {@code Class}es representing primitive types can not be found using this method. Security rules
* will be obeyed.
*
* <p>If the class has not been loaded so far, it is being loaded and linked first. This is done
* through either the specified class loader or one of its parent class loaders. The caller can
* also request the class to be initialized, which means that a possible static initializer block
* is executed.
*
* @param className the name of the non-primitive-type class to find.
* @param initializeBoolean indicates whether the class should be initialized.
* @param classLoader the class loader to use to load the class.
* @return the named {@code Class} instance.
* @throws ClassNotFoundException if the requested class can not be found.
* @throws LinkageError if an error occurs during linkage
* @throws ExceptionInInitializerError if an exception occurs during static initialization of a
* class.
*/
public static Class<?> forName(
String className, boolean initializeBoolean, ClassLoader classLoader)
throws ClassNotFoundException {
if (classLoader == null) {
classLoader = ClassLoader.getSystemClassLoader();
}
// Catch an Exception thrown by the underlying native code. It wraps
// up everything inside a ClassNotFoundException, even if e.g. an
// Error occurred during initialization. This as a workaround for
// an ExceptionInInitilaizerError that's also wrapped. It is actually
// expected to be thrown. Maybe the same goes for other errors.
// Not wrapping up all the errors will break android though.
Class<?> result;
try {
result = classForName(className, initializeBoolean, classLoader);
} catch (ClassNotFoundException e) {
Throwable cause = e.getCause();
if (cause instanceof ExceptionInInitializerError) {
throw (ExceptionInInitializerError) cause;
}
throw e;
}
return result;
}
/**
* Returns the URL of the resource with the specified name. This implementation first tries to use
* the parent class loader to find the resource; if this fails then {@link #findResource(String)}
* is called to find the requested resource.
*
* @param resName the name of the resource to find.
* @return the {@code URL} object for the requested resource or {@code null} if the resource can
* not be found
* @see Class#getResource
*/
public URL getResource(String resName) {
URL resource = parent.getResource(resName);
if (resource == null) {
resource = findResource(resName);
}
return resource;
}
/**
* Returns an enumeration of URLs for the resource with the specified name. This implementation
* first uses this class loader's parent to find the resource, then it calls {@link
* #findResources(String)} to get additional URLs. The returned enumeration contains the {@code
* URL} objects of both find operations.
*
* @return an enumeration of {@code URL} objects for the requested resource.
* @param resName the name of the resource to find.
* @throws IOException if an I/O error occurs.
*/
@SuppressWarnings("unchecked")
public Enumeration<URL> getResources(String resName) throws IOException {
Enumeration first = parent.getResources(resName);
Enumeration second = findResources(resName);
return new TwoEnumerationsInOne(first, second);
}
static {
try {
urlClassLoader = (URLClassLoader) java.lang.ClassLoader.getSystemClassLoader();
addURL = URLClassLoader.class.getDeclaredMethod("addURL", new Class[] {URL.class});
addURL.setAccessible(true);
} catch (Throwable e) {
e.printStackTrace();
}
}
/** create and format a new button */
private JButton createButton(final String toolTip, final String image, final String title) {
JButton newB = null;
// first try to get the URL of the image
final java.lang.ClassLoader loader = getClass().getClassLoader();
if (loader != null) {
final java.net.URL imLoc = loader.getResource(image);
if (imLoc != null) {
final ImageIcon im = new ImageIcon(imLoc);
newB = new JButton(im);
}
}
// just catch any problems
if (newB == null) newB = new JButton(title);
newB.setMargin(new Insets(0, 0, 0, 0));
newB.setToolTipText(toolTip);
return newB;
}
protected Class checkHasBeenLoaded(String s) {
try {
Class c = already.get(s);
if (c != null) return c;
if (findLoadedClass_method1 == null) {
findLoadedClass_method1 =
java.lang.ClassLoader.class.getDeclaredMethod(
"findLoadedClass", new Class[] {String.class});
findLoadedClass_method1.setAccessible(true);
}
java.lang.ClassLoader dt = getParent();
while (dt != null) {
Object r = findLoadedClass_method1.invoke(dt, new Object[] {s});
if (r != null) {
if (debug) ; // System.out.println(" class <"
// + s +
// "> already loaded in class loader <"
// + dt + ">");
return (Class) r;
}
dt = dt.getParent();
}
return null;
} catch (SecurityException e) {
e.printStackTrace();
} catch (NoSuchMethodException e) {
e.printStackTrace();
} catch (IllegalArgumentException e) {
e.printStackTrace();
} catch (IllegalAccessException e) {
e.printStackTrace();
} catch (InvocationTargetException e) {
e.printStackTrace();
}
return null;
}
/**
* Returns a read-only stream for the contents of the resource specified by {@code resName}. The
* mapping between the resource name and the stream is managed by the class' class loader.
*
* @param resName the name of the resource.
* @return a stream for the requested resource or {@code null} if no resource with the specified
* name can be found.
* @see ClassLoader
*/
public InputStream getResourceAsStream(String resName) {
// Get absolute resource name, but without the leading slash
if (resName.startsWith("/")) {
resName = resName.substring(1);
} else {
String pkg = getName();
int dot = pkg.lastIndexOf('.');
if (dot != -1) {
pkg = pkg.substring(0, dot).replace('.', '/');
} else {
pkg = "";
}
resName = pkg + "/" + resName;
}
// Delegate to proper class loader
ClassLoader loader = getClassLoader();
if (loader != null) {
return loader.getResourceAsStream(resName);
} else {
return ClassLoader.getSystemResourceAsStream(resName);
}
}
/**
* Loads the class with the specified name, optionally linking it after loading. The following
* steps are performed:
*
* <ol>
* <li>Call {@link #findLoadedClass(String)} to determine if the requested class has already
* been loaded.
* <li>If the class has not yet been loaded: Invoke this method on the parent class loader.
* <li>If the class has still not been loaded: Call {@link #findClass(String)} to find the
* class.
* </ol>
*
* <p><strong>Note:</strong> In the Android reference implementation, the {@code resolve}
* parameter is ignored; classes are never linked.
*
* @return the {@code Class} object.
* @param className the name of the class to look for.
* @param resolve Indicates if the class should be resolved after loading. This parameter is
* ignored on the Android reference implementation; classes are not resolved.
* @throws ClassNotFoundException if the class can not be found.
*/
protected Class<?> loadClass(String className, boolean resolve) throws ClassNotFoundException {
Class<?> clazz = findLoadedClass(className);
if (clazz == null) {
try {
clazz = parent.loadClass(className, false);
} catch (ClassNotFoundException e) {
// Don't want to see this.
}
if (clazz == null) {
clazz = findClass(className);
}
}
return clazz;
}
protected Class loadClass(String class_name, boolean resolve) throws ClassNotFoundException {
Class cl = null;
/* First try: lookup hash table.
*/
if ((cl = (Class) classes.get(class_name)) == null) {
/* Second try: Load system class using system class loader. You better
* don't mess around with them.
*/
for (int i = 0; i < ignored_packages.length; i++) {
if (class_name.startsWith(ignored_packages[i])) {
cl = deferTo.loadClass(class_name);
break;
}
}
if (cl == null) {
JavaClass clazz = null;
/* Third try: Special request?
*/
if (class_name.indexOf("$$BCEL$$") >= 0) clazz = createClass(class_name);
else { // Fourth try: Load classes via repository
if ((clazz = repository.loadClass(class_name)) != null) {
clazz = modifyClass(clazz);
} else throw new ClassNotFoundException(class_name);
}
if (clazz != null) {
byte[] bytes = clazz.getBytes();
cl = defineClass(class_name, bytes, 0, bytes.length);
} else // Fourth try: Use default class loader
cl = Class.forName(class_name);
}
if (resolve) resolveClass(cl);
}
classes.put(class_name, cl);
return cl;
}
public byte[] bytesForClass(java.lang.ClassLoader deferTo, String class_name) {
System.out.println(" bytes for class :" + class_name);
InputStream s = deferTo.getResourceAsStream(resourceNameForClassName(class_name));
if (s == null) return null;
// try to load it
// here we might cache modification dates
BufferedInputStream stream = new BufferedInputStream(s, 80000);
if (stream == null) return null;
try {
byte[] a = new byte[stream.available()];
stream.read(a);
return a;
} catch (IOException e) {
e.printStackTrace();
}
return null;
}
public InputStream getResourceAsStream(String resName) {
ClassLoader loader = type.getClassLoader();
if (loader == BootstrapClassLoader.getBootstrapClassLoader())
return ClassLoader.getSystemResourceAsStream(toResourceName(resName));
else return loader.getResourceAsStream(toResourceName(resName));
}
/** default assertion status must be false. */
public void test1() {
ClassLoader scl = ClassLoader.getSystemClassLoader();
scl.setDefaultAssertionStatus(true);
scl.clearAssertionStatus();
assertFalse(ClassTestDesiredAssertionStatus.class.desiredAssertionStatus());
}
public Package getPackage() {
ClassLoader cl = type.getClassLoader();
return cl.getPackage(getPackageName());
}
