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/*
This file is part of the iText (R) project.
Copyright (c) 1998-2024 Apryse Group NV
Authors: Apryse Software.
This program is offered under a commercial and under the AGPL license.
For commercial licensing, contact us at https://itextpdf.com/sales. For AGPL licensing, see below.
AGPL licensing:
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU Affero General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
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 Affero General Public License for more details.
You should have received a copy of the GNU Affero General Public License
along with this program. If not, see .
*/
package com.itextpdf.signatures.validation.v1.context;
import java.util.Objects;
/**
* Validation context class, which encapsulates specific context values, related to validation process.
*/
public class ValidationContext {
private final CertificateSource certificateSource;
private final ValidatorContext validatorContext;
private final TimeBasedContext timeBasedContext;
private ValidationContext previousValidationContext;
/**
* Create {@link ValidationContext} instance using provided context values.
*
* @param validatorContext {@link ValidatorContext} value
* @param certificateSource {@link CertificateSource} value
* @param timeBasedContext {@link TimeBasedContext} value
*/
public ValidationContext(ValidatorContext validatorContext, CertificateSource certificateSource,
TimeBasedContext timeBasedContext) {
this.validatorContext = validatorContext;
this.certificateSource = certificateSource;
this.timeBasedContext = timeBasedContext;
}
ValidationContext(ValidatorContext validatorContext, CertificateSource certificateSource,
TimeBasedContext timeBasedContext, ValidationContext previousValidationContext) {
this(validatorContext, certificateSource, timeBasedContext);
this.previousValidationContext = previousValidationContext;
}
/**
* Get previous validation context instance, from which this instance was created.
*
* @return previous {@link ValidatorContext} instance
*/
public ValidationContext getPreviousValidationContext() {
return previousValidationContext;
}
/**
* Get specific certificate source context value.
*
* @return {@link CertificateSource} context value
*/
public CertificateSource getCertificateSource() {
return certificateSource;
}
/**
* Create new {@link ValidationContext} instance with the provided certificate source context value.
*
* @param certificateSource {@link CertificateSource} value
*
* @return new {@link ValidationContext} instance
*/
public ValidationContext setCertificateSource(CertificateSource certificateSource) {
return new ValidationContext(validatorContext, certificateSource, timeBasedContext, this);
}
/**
* Get specific time-based context value.
*
* @return {@link TimeBasedContext} context value
*/
public TimeBasedContext getTimeBasedContext() {
return timeBasedContext;
}
/**
* Create new {@link ValidationContext} instance with the provided certificate source context value.
*
* @param timeBasedContext {@link TimeBasedContext} value
*
* @return new {@link ValidationContext} instance
*/
public ValidationContext setTimeBasedContext(TimeBasedContext timeBasedContext) {
return new ValidationContext(validatorContext, certificateSource, timeBasedContext, this);
}
/**
* Get specific validator context value.
*
* @return {@link ValidatorContext} context value
*/
public ValidatorContext getValidatorContext() {
return validatorContext;
}
/**
* Create new {@link ValidationContext} instance with the provided certificate source context value.
*
* @param validatorContext {@link ValidatorContext} value
*
* @return new {@link ValidationContext} instance
*/
public ValidationContext setValidatorContext(ValidatorContext validatorContext) {
return new ValidationContext(validatorContext, certificateSource, timeBasedContext, this);
}
/**
* Check if validation contexts chain contains specific {@link CertificateSource} value.
*
* @param context {@link ValidationContext} instance to start the check from
* @param source {@link CertificateSource} value to check
*
* @return {@code true} if validation contexts chain contains provided certificate source, {@code false} otherwise
*/
public static boolean checkIfContextChainContainsCertificateSource(ValidationContext context,
CertificateSource source) {
if (context == null) {
return false;
}
if (source == context.getCertificateSource()) {
return true;
}
return checkIfContextChainContainsCertificateSource(context.getPreviousValidationContext(), source);
}
/**
* Return string representation of this {@link ValidationContext}.
* Previous validation context is not a part of this representation.
*
* @return a string representation of the {@link ValidationContext}
*/
@Override
public String toString() {
return "ValidationContext{" +
"certificateSource=" + certificateSource +
", validatorContext=" + validatorContext +
", timeBasedContext=" + timeBasedContext +
'}';
}
/**
* Check if the provided object is equal to this one.
* Previous validation context field is not taken into account during this comparison.
*
* @param o the reference object with which to compare
*
* @return {@code true} if provided object is equal to this one, {@code false} otherwise
*/
@Override
public boolean equals(Object o) {
if (this == o) return true;
if (o == null || getClass() != o.getClass()) return false;
ValidationContext that = (ValidationContext) o;
return certificateSource == that.certificateSource
&& validatorContext == that.validatorContext
&& timeBasedContext == that.timeBasedContext;
}
/**
* Return a hash code value for this validation context.
* Previous validation context field is not taken into account during hash code calculation.
*
* @return a hash code value for this validation context
*/
@Override
public int hashCode() {
return Objects.hash((Object)certificateSource, validatorContext, timeBasedContext);
}
}
