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5c81df14
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@havlijan17
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package jdeserialize;
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import java.io.*;
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import java.util.*;
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/**
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* <p>
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* Represents the entire serialized prototype of the class, including all fields,
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* inner classes, class annotations, and inheritance hierarchy. This includes proxy class
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* descriptions.
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* </p>
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*
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* <p>
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* Generally, this class is used to represent the type of an instance written to an
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* ObjectOutputStream with its writeObject() method, or of a related array or field type.
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* However, there's a notable exception: when instances of type java.io.ObjectStreamClass
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* are written with writeObject(), only their class description is written (cf. Object
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* Serialization Specification, 4.3). They will be represented with an instance of
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* classdesc as well.
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* </p>
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*/
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public class classdesc extends contentbase {
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/**
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* Type of the class being represented; either a normal class or a proxy class.
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*/
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public classdesctype classtype;
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/**
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* Class name.
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*/
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public String name;
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/**
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* Serial version UID, as recorded in the stream.
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*/
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public long serialVersionUID;
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/**
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* Description flags byte; this should be a mask of values from the ObjectStreamContants
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* class. Refer to chapter 6 of the Object Stream Serialization Protocol for details.
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*/
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public byte descflags;
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/**
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* Array of fields in the class, in the order serialized by the stream writer.
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*/
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public field[] fields;
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/**
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* List of inner classes, in the order serialized by the stream writer.
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*/
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public List<classdesc> innerclasses;
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/**
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* List of annotation objects; these are *not* Java annotations, but data written by
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* the <pre>annotateClass(Class<?>)<pre> and <pre>annotateProxyClass(Class<?>)</pre> methods of an
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* ObjectOutputStream.
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*/
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public List<content> annotations;
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/**
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* The superclass of the object, if available.
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*/
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public classdesc superclass;
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/**
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* Array of serialized interfaces, in the order serialized by the stream writer.
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*/
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public String[] interfaces;
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/**
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* Set of enum constants, for enum classes.
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*/
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public Set<String> enumconstants;
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private boolean isInnerClass = false;
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/**
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* True if this class has been determined to be an inner class; this determination is
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* generally made by connectMemberClasses().
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*
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* @return true if the class is an inner class
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*/
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public boolean isInnerClass() {
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return isInnerClass;
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}
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/**
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* Sets the value that denotes that the class is an inner class.
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*
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* @param nis the value to set
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*/
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public void setIsInnerClass(boolean nis) {
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this.isInnerClass = nis;
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}
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private boolean isLocalInnerClass = false;
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/**
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* True if this class has been determined to be a local inner class; this
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* determination is generally made by connectMemberClasses().
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*
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* @return true if the class is a local inner class
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*/
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public boolean isLocalInnerClass() {
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return isLocalInnerClass;
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}
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/**
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* Sets the flag that denotes whether this class is a local inner class.
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*
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* @param nis the value to set
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*/
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public void setIsLocalInnerClass(boolean nis) {
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this.isLocalInnerClass = nis;
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}
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private boolean isStaticMemberClass = false;
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/**
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* <p>
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* True if this class has been determined to be a static member class; this
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* determination is generally made by connectMemberClasses().
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* </p>
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*
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* <p>
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* Note that in some cases, static member classes' descriptions will be serialized
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* even though their enclosing class is not. In these cases, this may return false.
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* See connectMemberClasses() for details.
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* </p>
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*
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* @return true if this is a static member class
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*/
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public boolean isStaticMemberClass() {
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return isStaticMemberClass;
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}
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/**
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* Sets the flag that denotes whether this class is a static member class.
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*
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* @param nis the value to set
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*/
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public void setIsStaticMemberClass(boolean nis) {
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this.isStaticMemberClass = nis;
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}
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/**
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* Constructor.
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*
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* @param classtype the type of the class
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*/
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public classdesc(classdesctype classtype) {
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super(contenttype.CLASSDESC);
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this.classtype = classtype;
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this.enumconstants = new HashSet<String>();
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this.innerclasses = new ArrayList<classdesc>();
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}
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/**
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* Add an inner class to the description's list.
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* @param cd inner class to add
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*/
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public void addInnerClass(classdesc cd) {
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innerclasses.add(cd);
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}
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/**
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* Add an enum constant to the description's set.
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*
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* @param constval enum constant string
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*/
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public void addEnum(String constval) {
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this.enumconstants.add(constval);
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}
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/**
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* Determines whether this is an array type.
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* @return true if this is an array type.
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*/
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public boolean isArrayClass() {
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if(name != null && name.length() > 1 && name.charAt(0) == '[') {
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return true;
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} else {
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return false;
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}
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}
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public String toString() {
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StringBuffer sb = new StringBuffer();
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sb.append("[cd ").append(jdeserialize.hex(handle)).append(": name ").append(name);
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sb.append(" uid ").append(serialVersionUID);
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sb.append("]");
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return sb.toString();
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}
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/**
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* Generates a list of all class descriptions in this class's hierarchy, in the order
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* described by the Object Stream Serialization Protocol. This is the order in which
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* fields are read from the stream.
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*
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* @param classes a list to be filled in with the hierarchy
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*/
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public void getHierarchy(ArrayList<classdesc> classes) {
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if(superclass != null) {
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if(superclass.classtype == classdesctype.PROXYCLASS) {
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jdeserialize.debugerr("warning: hit a proxy class in superclass hierarchy");
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} else {
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superclass.getHierarchy(classes);
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}
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}
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classes.add(this);
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}
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public void validate() throws ValidityException {
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// If neither SC_SERIALIZABLE nor SC_EXTERNALIZABLE is set, then the number of
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// fields is always zero. (spec section 4.3)
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if((descflags & (ObjectStreamConstants.SC_SERIALIZABLE | ObjectStreamConstants.SC_EXTERNALIZABLE)) == 0 && fields != null && fields.length > 0) {
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throw new ValidityException("non-serializable, non-externalizable class has fields!");
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}
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if((descflags & (ObjectStreamConstants.SC_SERIALIZABLE | ObjectStreamConstants.SC_EXTERNALIZABLE)) == (ObjectStreamConstants.SC_SERIALIZABLE | ObjectStreamConstants.SC_EXTERNALIZABLE)) {
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throw new ValidityException("both Serializable and Externalizable are set!");
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}
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if((descflags & ObjectStreamConstants.SC_ENUM) != 0) {
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// we're an enum; shouldn't have any fields/superinterfaces
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if((fields != null && fields.length > 0) || interfaces != null) {
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throw new ValidityException("enums shouldn't implement interfaces or have non-constant fields!");
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}
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} else {
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// non-enums shouldn't have enum constant fields.
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if(enumconstants != null && enumconstants.size() > 0) {
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throw new ValidityException("non-enum classes shouldn't have enum constants!");
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}
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}
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}
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}
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