/*
* JBoss, Home of Professional Open Source.
* Copyright 2014 Red Hat, Inc., and individual contributors
* as indicated by the @author tags.
*
* 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 io.undertow.predicate;
import java.util.HashMap;
import java.util.HashSet;
import java.util.Map;
import java.util.Set;
import io.undertow.attribute.ExchangeAttribute;
import io.undertow.server.HttpServerExchange;
/**
* Returns true if the request header is present and contains one of the strings to match.
*
* @author Stuart Douglas
*/
class ContainsPredicate implements Predicate {
private final ExchangeAttribute attribute;
private final String[] values;
ContainsPredicate(final ExchangeAttribute attribute, final String[] values) {
this.attribute = attribute;
this.values = new String[values.length];
System.arraycopy(values, 0, this.values, 0, values.length);
}
@Override
public boolean resolve(final HttpServerExchange value) {
String attr = attribute.readAttribute(value);
if (attr == null) {
return false;
}
for (int i = 0; i < values.length; ++i) {
if (attr.contains(values[i])) {
return true;
}
}
return false;
}
public static class Builder implements PredicateBuilder {
@Override
public String name() {
return "contains";
}
@Override
public Map<String, Class<?>> parameters() {
final Map<String, Class<?>> params = new HashMap<String, Class<?>>();
params.put("value", ExchangeAttribute.class);
params.put("search", String[].class);
return params;
}
@Override
public Set<String> requiredParameters() {
final Set<String> params = new HashSet<String>();
params.add("value");
params.add("search");
return params;
}
@Override
public String defaultParameter() {
return null;
}
@Override
public Predicate build(final Map<String, Object> config) {
String[] search = (String[]) config.get("search");
ExchangeAttribute values = (ExchangeAttribute) config.get("value");
return new ContainsPredicate(values, search);
}
}
}