org.hibernate.validator.internal.constraintvalidators.SafeHtmlValidator Maven / Gradle / Ivy
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* Copyright 2011, Red Hat Middleware LLC, and individual contributors
* by the @authors tag. See the copyright.txt in the distribution for a
* full listing of individual contributors.
*
* Licensed 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.hibernate.validator.internal.constraintvalidators;
import javax.validation.ConstraintValidator;
import javax.validation.ConstraintValidatorContext;
import org.jsoup.Jsoup;
import org.jsoup.safety.Whitelist;
import org.hibernate.validator.constraints.SafeHtml;
/**
* Validate that the string does not contain malicious code.
*
* It uses JSoup as the underlying parser/sanitizer library.
*
* @author George Gastaldi
*/
public class SafeHtmlValidator implements ConstraintValidator {
private Whitelist whitelist;
public void initialize(SafeHtml constraintAnn) {
switch ( constraintAnn.whitelistType() ) {
case BASIC:
whitelist = Whitelist.basic();
break;
case BASIC_WITH_IMAGES:
whitelist = Whitelist.basicWithImages();
break;
case NONE:
whitelist = Whitelist.none();
break;
case RELAXED:
whitelist = Whitelist.relaxed();
break;
case SIMPLE_TEXT:
whitelist = Whitelist.simpleText();
break;
}
whitelist.addTags( constraintAnn.additionalTags() );
}
public boolean isValid(CharSequence value, ConstraintValidatorContext context) {
if ( value == null ) {
return true;
}
return Jsoup.isValid( value.toString(), whitelist );
}
}