iaik.pkcs.pkcs11.objects.AttributeArray Maven / Gradle / Ivy
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package iaik.pkcs.pkcs11.objects;
import java.util.ArrayList;
import java.util.Enumeration;
import java.util.List;
import iaik.pkcs.pkcs11.wrapper.Constants;
import sun.security.pkcs11.wrapper.CK_ATTRIBUTE;
/**
* Objects of this class represent a attribute array of a PKCS#11 object
* as specified by PKCS#11. This attribute is available since
* cryptoki version 2.20.
*
*
* @author Birgit Haas
* @version 1.0
* @invariants
*/
@SuppressWarnings("restriction")
public class AttributeArray extends Attribute {
/**
* The attributes of this attribute array in their object class
* representation. Needed for printing and comparing this attribute array.
*/
protected Object template_;
/**
* Default constructor - only for internal use.
*/
AttributeArray() {
super();
}
/**
* Constructor taking the PKCS#11 type of the attribute.
*
* @param type
* The PKCS#11 type of this attribute; e.g.
* PKCS11Constants.CKA_VALUE.
* @preconditions (type <> null)
* @postconditions
*/
public AttributeArray(Long type) {
super(type);
}
/**
* Set the attributes of this attribute array by specifying a
* GenericTemplate. Null, is also valid.
* A call to this method sets the present flag to true.
*
* @param value
* The AttributeArray value to set. May be null.
* @preconditions
* @postconditions
*/
public void setAttributeArrayValue(Object value) {
template_ = value;
List attributeList = new ArrayList<>();
Enumeration attributeEnumeration
= template_.attributeTable_.elements();
while (attributeEnumeration.hasMoreElements()) {
Attribute attribute = attributeEnumeration.nextElement();
if (attribute.present_) {
attributeList.add(attribute.getCkAttribute());
}
}
ckAttribute_.pValue = (CK_ATTRIBUTE[])
attributeList.toArray(new CK_ATTRIBUTE[0]);
present_ = true;
}
/**
* Get the attribute array value of this attribute. Null, is also possible.
*
* @return The attribute array value of this attribute or null.
* @preconditions
* @postconditions
*/
public Object getAttributeArrayValue() {
if (template_ != null) {
return template_;
}
if (!(ckAttribute_.pValue != null
&& ((CK_ATTRIBUTE[]) ckAttribute_.pValue).length > 0)) {
return null;
}
CK_ATTRIBUTE[] attributesArray = (CK_ATTRIBUTE[]) ckAttribute_.pValue;
GenericTemplate template = new GenericTemplate();
for (int i = 0; i < attributesArray.length; i++) {
Long type = new Long(attributesArray[i].type);
Class implementation
= (Class) Attribute.getAttributeClass(type);
Attribute attribute;
if (implementation == null) {
attribute = new OtherAttribute();
attribute.setType(type);
attribute.setCkAttribute(attributesArray[i]);
} else {
try {
attribute = (Attribute) implementation.newInstance();
attribute.setCkAttribute(attributesArray[i]);
attribute.setPresent(true);
template.addAttribute(attribute);
} catch (Exception ex) {
System.err.println(
"Error when trying to create a " + implementation
+ " instance for " + type + ": " + ex.getMessage());
System.err.flush();
continue;
}
}
}
return template;
}
/**
* Get a string representation of the value of this attribute.
*
* @return A string representation of the value of this attribute.
* @preconditions
* @postconditions (result <> null)
*/
protected String getValueString() {
String valueString = "";
if (template_ == null) {
template_ = getAttributeArrayValue();
}
if (template_ == null) {
valueString = "";
} else {
String indent
= Constants.INDENT + Constants.INDENT + Constants.INDENT;
valueString += template_.toString(true, true, indent);
}
return valueString;
}
/**
* Compares all member variables of this object with the other object.
* Returns only true, if all are equal in both objects.
*
* @param otherObject
* The other object to compare to.
* @return True, if other is an instance of this class and all member
* variables of both objects are equal. False, otherwise.
* @preconditions
* @postconditions
*/
@Override
public boolean equals(java.lang.Object otherObject) {
if (this == otherObject) {
return true;
}
if (!(otherObject instanceof AttributeArray)) {
return false;
}
AttributeArray other = (AttributeArray) otherObject;
if (this.template_ == null) {
this.template_ = this.getAttributeArrayValue();
}
if (other.template_ == null) {
other.template_ = other.getAttributeArrayValue();
}
if (!this.present_ && !other.present_) {
return true;
}
if (!(this.present_ && other.present_)) {
return false;
}
if (this.sensitive_ != other.sensitive_) {
return false;
}
return this.template_.equals(other.template_);
}
/**
* The overriding of this method should ensure that the objects of this
* class work correctly in a hashtable.
*
* @return The hash code of this object.
* @preconditions
* @postconditions
*/
@Override
public int hashCode() {
if (template_ == null) {
template_ = getAttributeArrayValue();
}
return template_.hashCode();
}
/**
* Create a (deep) clone of this object.
* The attributes in the CK_ATTRIBUTE[] need not be cloned, as they can't be
* set separately.
*
* @return A clone of this object.
* @preconditions
* @postconditions (result <> null)
* and (result instanceof AttributeArray)
* and (result.equals(this))
*/
@Override
public java.lang.Object clone() {
AttributeArray clone;
clone = (AttributeArray) super.clone();
if (template_ == null) {
template_ = getAttributeArrayValue();
}
if (template_ != null) {
clone.template_ = (GenericTemplate) this.template_.clone();
}
return clone;
}
@Override
public void setValue(java.lang.Object value)
throws UnsupportedOperationException {
setAttributeArrayValue((Object) value);
}
}
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