/*
* Copyright 2016 The Simple File Server Authors
*
* 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.sfs.validate;
import io.vertx.core.MultiMap;
import io.vertx.core.json.JsonObject;
import org.sfs.SfsRequest;
import org.sfs.util.HttpRequestValidationException;
import rx.functions.Func1;
import java.util.regex.Matcher;
import static java.lang.String.format;
import static java.net.HttpURLConnection.HTTP_BAD_REQUEST;
import static org.sfs.util.MessageDigestFactory.fromValueIfExists;
import static org.sfs.util.SfsHttpQueryParams.COMPUTED_DIGEST;
public class ValidateParamComputedDigest implements Func1<SfsRequest, SfsRequest> {
@Override
public SfsRequest call(SfsRequest httpServerRequest) {
MultiMap params = httpServerRequest.params();
for (String param : params.names()) {
Matcher matcher = COMPUTED_DIGEST.matcher(param);
if (matcher.matches()) {
String digestName = matcher.group(1);
if (!fromValueIfExists(digestName).isPresent()) {
JsonObject jsonObject = new JsonObject()
.put("message", format("%s is not a supported digest", digestName));
throw new HttpRequestValidationException(HTTP_BAD_REQUEST, jsonObject);
}
}
}
return httpServerRequest;
}
}