/*
* JBoss, Home of Professional Open Source.
* Copyright 2013 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.Collections;
import java.util.HashMap;
import java.util.Map;
import java.util.Set;
import io.undertow.server.HttpServerExchange;
import io.undertow.util.HttpString;
/**
* Returns true if the request headers are true.
* <p/>
* If allHeaders is true it will return true if all headers are present
* otherwise it will return true if a single header is present
*
* @author Stuart Douglas
*/
class HasRequestHeaderPredicate implements Predicate {
private final HttpString[] headers;
private final boolean allHeaders;
HasRequestHeaderPredicate(final String[] headers, final boolean allHeaders) {
this.allHeaders = allHeaders;
HttpString[] h = new HttpString[headers.length];
for (int i = 0; i < headers.length; ++i) {
h[i] = new HttpString(headers[i]);
}
this.headers = h;
}
@Override
public boolean resolve(final HttpServerExchange value) {
if (allHeaders) {
for (HttpString header : headers) {
if (!value.getRequestHeaders().contains(header)) {
return false;
}
}
return true;
} else {
for (HttpString header : headers) {
if (value.getRequestHeaders().contains(header)) {
return true;
}
}
return false;
}
}
public static class Builder implements PredicateBuilder {
@Override
public String name() {
return "hasRequestHeaders";
}
@Override
public Map<String, Class<?>> parameters() {
final Map<String, Class<?>> params = new HashMap<String, Class<?>>();
params.put("headers", String[].class);
params.put("requireAllHeaders", boolean.class);
return params;
}
@Override
public Set<String> requiredParameters() {
return Collections.singleton("headers");
}
@Override
public String defaultParameter() {
return "headers";
}
@Override
public Predicate build(final Map<String, Object> config) {
String[] headers = (String[]) config.get("headers");
Boolean all = (Boolean) config.get("requireAllHeaders");
return new HasRequestHeaderPredicate(headers, all == null ? true : all);
}
}
}