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JSPservletPkg
Class JSPloader  

java.lang.Object
  java.lang.ClassLoader
      JSPservletPkg.JSPloader

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public class JSPloader

extends java.lang.ClassLoader

ClassLoader invoked by ClassEntry for a given jar name.

Copyright (c) 2000-2001

 This program is free software; you can redistribute it and/or
 modify it under the terms of the GNU General Public License
 as published by the Free Software Foundation; version 2
 of the License.
 This program is distributed in the hope that it will be useful,
 but WITHOUT ANY WARRANTY; without even the implied warranty of
 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 GNU General Public License for more details.
 

Version:

1, 0

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Nested Class Summary
(package private)  class	JSPloader.ClassInfo           Maintain class object and serial number.
(package private)  class	JSPloader.ProtectionDomainInfo           Maintain Protection Domains and CRL scheduled next update.
(package private)  class	JSPloader.ResourceEntry           ressources value - maintains a buffer containing the resource and a lastModified time.

 

Nested classes inherited from class java.lang.ClassLoader

 

Field Summary
(package private) static java.lang.Class	ac
private static sun.security.provider.PolicyFile	allPermissionPolicy           application server policy
private  java.net.URL	baseURL           base URL for policy checking
private static java.security.cert.Certificate[]	certificate0           null certificate list (unsigned archive)
(package private)  java.util.HashMap	classes           Loaded classes HashMap.
private  java.lang.Object	crlChecker           CRLchecker instance
private  java.lang.reflect.Method	crlCheckMethod           CRLchecker check method
private static sun.security.provider.PolicyFile	defaultPolicy           policy set by default
(package private)  JSPhandler	handler           back pointer on JSPhandler
private static boolean	isSSLset           if true has tried to install jsse
(package private)  java.lang.String	jarName           jar name
(package private)  java.lang.String	jarURL           jar remote location (URL)
private  long	lastModified           cache file timestamp - used for caching
private  java.lang.Class	pageBoxClass           PageBoxAPI class - used at loadClass
(package private)  java.lang.ClassLoader	parent           parent class loader
private  sun.security.provider.PolicyFile	policy           policy used by loaded classes
private  java.lang.String	policyFile           policy file used by loaded classes
private  java.security.ProtectionDomain	protectionDomain0           ProtectionDomain for classes without certificate
private  java.util.HashMap	protectionDomains           map of protection domains
(package private)  java.util.HashMap	resources           Loaded resources HashMap.
(package private) static java.lang.Class	RPAclass
(package private)  java.lang.reflect.Constructor	RPAconstr
private  int	size           classes size
private static java.lang.String	SSL_SERVICE           JES2 jsse service.
private static org.osgi.framework.ServiceReference	sslSR           SSL service reference.
private static java.lang.String	webInfClasses           part to remove in case of war classes

 

Fields inherited from class java.lang.ClassLoader

 

Constructor Summary

JSPloader(JSPhandler jh, java.lang.String jarName, java.lang.String jarURL)           Constructor.

 

Method Summary
private  boolean	copyClassesURL()           Copy classes from remote location (URL).
protected  void	finalize()           to avoid loitering
long	getLastModified(java.lang.String name)           Returns resource timestamp
java.io.InputStream	getResourceAsStream(java.lang.String name)           Externally called method (from Beans.Instantiate or to access resources).
private  java.io.InputStream	getResourceForward(java.lang.String name)           method called by getResourceAsStream.
(package private)  int	getSize()           Returns classes size.
java.lang.Class	loadClass(java.lang.String name, boolean resolve)           Externally called method (from ClassEntry and JVM).
private  boolean	loadClassDataFS()           Loads class from local cache (File System).
private  boolean	loadClassDataURL()           Loads class from remote location (URL).
private  java.lang.Class	loadForward(java.lang.String name)           Forward load requests.
private  java.lang.String	loadPolicy()           Copy policy file from remote location (URL).
(package private)  JSPloader.ResourceEntry	newResourceEntry()           Helper method.
private  boolean	parseStream(java.util.jar.JarInputStream jis, boolean toSave, boolean isWar)           Parses the jar stream.
private static void	setSSL(JSPhandler handler)           Installs jsse.

 

Methods inherited from class java.lang.ClassLoader

clearAssertionStatus, defineClass, defineClass, defineClass, defineClass, definePackage, findClass, findLibrary, findLoadedClass, findResource, findResources, findSystemClass, getPackage, getPackages, getParent, getResource, getResources, getSystemClassLoader, getSystemResource, getSystemResourceAsStream, getSystemResources, loadClass, resolveClass, setClassAssertionStatus, setDefaultAssertionStatus, setPackageAssertionStatus, setSigners

 

Methods inherited from class java.lang.Object

clone, equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

 

Field Detail

handler

JSPhandler handler

back pointer on JSPhandler

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jarURL

java.lang.String jarURL

jar remote location (URL)

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jarName

java.lang.String jarName

jar name

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classes

java.util.HashMap classes

Loaded classes HashMap. key: full class name value: ClassInfo

See Also:

JSPloader.ClassInfo

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size

private int size

classes size

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resources

java.util.HashMap resources

Loaded resources HashMap. key: remote location value: byte[]

See Also:

JSPloader.ResourceEntry

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parent

java.lang.ClassLoader parent

parent class loader

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baseURL

private java.net.URL baseURL

base URL for policy checking

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defaultPolicy

private static sun.security.provider.PolicyFile defaultPolicy

policy set by default

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allPermissionPolicy

private static sun.security.provider.PolicyFile allPermissionPolicy

application server policy

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policy

private sun.security.provider.PolicyFile policy

policy used by loaded classes

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policyFile

private java.lang.String policyFile

policy file used by loaded classes

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webInfClasses

private static final java.lang.String webInfClasses

part to remove in case of war classes

See Also:

Constant Field Values

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certificate0

private static final java.security.cert.Certificate[] certificate0

null certificate list (unsigned archive)

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protectionDomain0

private java.security.ProtectionDomain protectionDomain0

ProtectionDomain for classes without certificate

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protectionDomains

private java.util.HashMap protectionDomains

map of protection domains

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lastModified

private long lastModified

cache file timestamp - used for caching

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crlChecker

private java.lang.Object crlChecker

CRLchecker instance

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crlCheckMethod

private java.lang.reflect.Method crlCheckMethod

CRLchecker check method

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isSSLset

private static boolean isSSLset

if true has tried to install jsse

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pageBoxClass

private java.lang.Class pageBoxClass

PageBoxAPI class - used at loadClass

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SSL_SERVICE

private static final java.lang.String SSL_SERVICE

JES2 jsse service.

See Also:

Constant Field Values

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sslSR

private static org.osgi.framework.ServiceReference sslSR

SSL service reference.

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RPAconstr

java.lang.reflect.Constructor RPAconstr

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RPAclass

static java.lang.Class RPAclass

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ac

static java.lang.Class ac

Constructor Detail

JSPloader

public JSPloader(JSPhandler jh,
                 java.lang.String jarName,
                 java.lang.String jarURL)
          throws JSPloaderException

Constructor. Initialize variables. Can load classes without resolving them.

1. If no sandbox:
1. Tries loading classes from cache (loadClassDataFS).
2. Tries loading classes from remote location (loadClassDataURL).
2. If sandbox:
1. Defines all permission and default policies.
2. Loads archive policy and update keystore if needed.
3. Instantiates CRLchecker.
4. Tries loading classes from cache (loadClassDataFS).
5. Tries copying archive from remote location and load classes.

Method Detail

setSSL

private static final void setSSL(JSPhandler handler)

Installs jsse.

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getSize

final int getSize()

Returns classes size.

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getLastModified

public final long getLastModified(java.lang.String name)

Returns resource timestamp

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parseStream

private final boolean parseStream(java.util.jar.JarInputStream jis,
                                  boolean toSave,
                                  boolean isWar)

Parses the jar stream.

1. Creates local cache if toSave.
2. Scans jis. For each entry, write on local cache if toSave, define the class and save it in classes HashMap.

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loadClassDataFS

private final boolean loadClassDataFS()

Loads class from local cache (File System).

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copyClassesURL

private final boolean copyClassesURL()

Copy classes from remote location (URL).

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loadPolicy

private final java.lang.String loadPolicy()

Copy policy file from remote location (URL).

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loadClassDataURL

private final boolean loadClassDataURL()

Loads class from remote location (URL).

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loadForward

private final java.lang.Class loadForward(java.lang.String name)
                                   throws java.lang.ClassNotFoundException

Forward load requests. To:

1. Bootstrap and system class loaders (findSystemClass).
2. JSPservlet class loader.
3. Parent class loader.

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loadClass

public java.lang.Class loadClass(java.lang.String name,
                                 boolean resolve)
                          throws java.lang.ClassNotFoundException

Externally called method (from ClassEntry and JVM).

1. Calls loadForward for special suffixes.
2. Find the requested class in classes cache.
3. If not found, calls loadForward.

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getResourceForward

private final java.io.InputStream getResourceForward(java.lang.String name)

method called by getResourceAsStream.

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newResourceEntry

final JSPloader.ResourceEntry newResourceEntry()

Helper method. ResourceEntry is not in the scope of ResourcePrivilegeAction that needs to create it.

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getResourceAsStream

public java.io.InputStream getResourceAsStream(java.lang.String name)

Externally called method (from Beans.Instantiate or to access resources). This method shouldn't be synchronized as URL handling requires time.

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finalize

protected void finalize()

to avoid loitering

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Overview  Package   Class  Use  Deprecated  Index
Home >> All >> [ JSPservletPkg overview ]	PREV CLASS  NEXT CLASS
SUMMARY:  JAVADOC |  SOURCE |  DOWNLOAD | NESTED | FIELD | CONSTR | METHOD	DETAIL: FIELD | CONSTR | METHOD

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