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/**
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements. See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership. The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License. You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied. See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */

package org.apache.wss4j.common.saml;

import org.apache.wss4j.common.crypto.Crypto;
import org.apache.wss4j.common.saml.bean.AttributeStatementBean;
import org.apache.wss4j.common.saml.bean.AuthDecisionStatementBean;
import org.apache.wss4j.common.saml.bean.AuthenticationStatementBean;
import org.apache.wss4j.common.saml.bean.ConditionsBean;
import org.apache.wss4j.common.saml.bean.SubjectBean;
import org.opensaml.common.SAMLVersion;
import org.w3c.dom.Element;

import javax.security.auth.callback.Callback;
import java.util.ArrayList;
import java.util.List;


/**
 * Class SAMLCallback will be called by the SamlAssertionWrapper during the creation
 * of SAML statements (authentication, attribute, and authz decision). Alternatively, the
 * "assertionElement" member of this class can be set instead, for a pre-existing SAML
 * Assertion.
 */
public class SAMLCallback implements Callback {
    
    /**
     * The SAML Version of the Assertion to create
     */
    private SAMLVersion samlVersion;
    
    /**
     * SAML subject representation
     */
    private SubjectBean subject;
    
    /**
     * The issuer of the Assertion
     */
    private String issuer;
    
    /**
     * SAML Conditions representation
     */
    private ConditionsBean conditions;

    /**
     * A list of AuthenticationStatementBean values
     */
    private List authenticationStatementData;

    /**
     * A list of AttributeStatementBean values
     */
    private List attributeStatementData;

    /**
     * A list of AuthDecisionStatementBean values
     */
    private List authDecisionStatementData;
    
    /**
     * A DOM Element representation of this SAML Assertion
     */
    private Element assertionElement;
    
    private boolean signAssertion;

    private String issuerKeyName;

    private String issuerKeyPassword;

    private Crypto issuerCrypto;

    private boolean sendKeyValue;

    private String canonicalizationAlgorithm;

    private String signatureAlgorithm;

    /**
     * Constructor SAMLCallback creates a new SAMLCallback instance.
     */
    public SAMLCallback() {
        authenticationStatementData = new ArrayList();
        attributeStatementData = new ArrayList();
        authDecisionStatementData = new ArrayList();
    }

    /**
     * Method getAuthenticationStatementData returns the authenticationStatementData of this 
     * SAMLCallback object.
     *
     * @return the authenticationStatementData (type List) of 
     *         this SAMLCallback object.
     */
    public List getAuthenticationStatementData() {
        return authenticationStatementData;
    }

    /**
     * Method setAuthenticationStatementData sets the authenticationStatementData of this 
     * SAMLCallback object.
     *
     * @param authenticationStatementData the authenticationStatementData of this 
     *        SAMLCallback object.
     */
    public void setAuthenticationStatementData(
        List authenticationStatementData
    ) {
        this.authenticationStatementData = authenticationStatementData;
    }

    /**
     * Method getAttributeStatementData returns the attributeStatementData of this 
     * SAMLCallback object.
     *
     * @return the attributeStatementData (type List) of this 
     *         SAMLCallback object.
     */
    public List getAttributeStatementData() {
        return attributeStatementData;
    }

    /**
     * Method setAttributeStatementData sets the attributeStatementData of this SAMLCallback object.
     *
     * @param attributeStatementData the attributeStatementData of this SAMLCallback object.
     */
    public void setAttributeStatementData(List attributeStatementData) {
        this.attributeStatementData = attributeStatementData;
    }

    /**
     * Method getAuthDecisionStatementData returns the authDecisionStatementData of this 
     * SAMLCallback object.
     *
     * @return the authDecisionStatementData (type List) of this 
     *         SAMLCallback object.
     */
    public List getAuthDecisionStatementData() {
        return authDecisionStatementData;
    }

    /**
     * Method setAuthDecisionStatementData sets the authDecisionStatementData of this 
     * SAMLCallback object.
     *
     * @param authDecisionStatementData the authDecisionStatementData of this 
     *        SAMLCallback object.
     */
    public void setAuthDecisionStatementData(
        List authDecisionStatementData
    ) {
        this.authDecisionStatementData = authDecisionStatementData;
    }

    /**
     * Method getSubject returns the subject of this SAMLCallback object.
     *
     * @return the subject (type SubjectBean) of this SAMLCallback object.
     */
    public SubjectBean getSubject() {
        if (subject != null) {
            return subject;
        }
        
        // SAML 1.1 case
        if (authenticationStatementData != null) {
            for (AuthenticationStatementBean bean : authenticationStatementData) {
                if (bean.getSubject() != null) {
                    return bean.getSubject();
                }
            }
        }
        
        if (attributeStatementData != null) {
            for (AttributeStatementBean bean : attributeStatementData) {
                if (bean.getSubject() != null) {
                    return bean.getSubject();
                }
            }
        }
        
        if (authDecisionStatementData != null) {
            for (AuthDecisionStatementBean bean : authDecisionStatementData) {
                if (bean.getSubject() != null) {
                    return bean.getSubject();
                }
            }
        }
        
        return null;
    }

    /**
     * Method setSubject sets the subject of this SAMLCallback object.
     *
     * @param subject the subject of this SAMLCallback object.
     */
    public void setSubject(SubjectBean subject) {
        this.subject = subject;
    }
    
    /**
     * Method getIssuer returns the issuer of this SAMLCallback object.
     *
     * @return the issuer of this SAMLCallback object.
     */
    public String getIssuer() {
        return issuer;
    }

    /**
     * Method setIssuer sets the issuer of this SAMLCallback object.
     *
     * @param issuer the issuer of this SAMLCallback object.
     */
    public void setIssuer(String issuer) {
        this.issuer = issuer;
    }
    
    /**
     * Method getConditions returns the conditions of this SAMLCallback object.
     *
     * @return the conditions (type ConditionsBean) of this SAMLCallback object.
     */
    public ConditionsBean getConditions() {
        return conditions;
    }

    /**
     * Method setConditions sets the conditions of this SAMLCallback object.
     *
     * @param conditions the conditions of this SAMLCallback object.
     */
    public void setConditions(ConditionsBean conditions) {
        this.conditions = conditions;
    }
    
    /**
     * Set the SAMLVersion of the assertion to create
     * @param samlVersion the SAMLVersion of the assertion to create
     */
    public void setSamlVersion(SAMLVersion samlVersion) {
        this.samlVersion = samlVersion;
    }
    
    /**
     * Get the SAMLVersion of the assertion to create
     * @return the SAMLVersion of the assertion to create
     */
    public SAMLVersion getSamlVersion() {
        return samlVersion;
    }
    
    /**
     * Set the DOM representation of this SAML Assertion
     * @param assertionElement the DOM representation of this SAML Assertion
     */
    public void setAssertionElement(Element assertionElement) {
        this.assertionElement = assertionElement;
    }
    
    /**
     * Get the DOM representation of this SAML Assertion
     * @return the DOM representation of this SAML Assertion
     */
    public Element getAssertionElement() {
        return assertionElement;
    }
    
    public boolean isSignAssertion() {
        return signAssertion;
    }

    public void setSignAssertion(boolean signAssertion) {
        this.signAssertion = signAssertion;
    }

    public String getIssuerKeyName() {
        return issuerKeyName;
    }

    public void setIssuerKeyName(String issuerKeyName) {
        this.issuerKeyName = issuerKeyName;
    }

    public String getIssuerKeyPassword() {
        return issuerKeyPassword;
    }

    public void setIssuerKeyPassword(String issuerKeyPassword) {
        this.issuerKeyPassword = issuerKeyPassword;
    }

    public Crypto getIssuerCrypto() {
        return issuerCrypto;
    }

    public void setIssuerCrypto(Crypto issuerCrypto) {
        this.issuerCrypto = issuerCrypto;
    }

    public boolean isSendKeyValue() {
        return sendKeyValue;
    }

    public void setSendKeyValue(boolean sendKeyValue) {
        this.sendKeyValue = sendKeyValue;
    }

    public String getCanonicalizationAlgorithm() {
        return canonicalizationAlgorithm;
    }

    public void setCanonicalizationAlgorithm(String canonicalizationAlgorithm) {
        this.canonicalizationAlgorithm = canonicalizationAlgorithm;
    }

    public String getSignatureAlgorithm() {
        return signatureAlgorithm;
    }

    public void setSignatureAlgorithm(String signatureAlgorithm) {
        this.signatureAlgorithm = signatureAlgorithm;
    }
}




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