| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you 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.apache.syncope.core.persistence.jpa.attrvalue.validation; |
| |
| import com.fasterxml.jackson.databind.json.JsonMapper; |
| import java.io.IOException; |
| import javax.ws.rs.core.MediaType; |
| import org.apache.syncope.core.persistence.api.attrvalue.validation.InvalidPlainAttrValueException; |
| import org.apache.syncope.core.persistence.api.entity.PlainAttrValue; |
| import org.apache.syncope.core.persistence.api.entity.PlainSchema; |
| import org.apache.tika.Tika; |
| |
| public class BinaryValidator extends AbstractValidator { |
| |
| private static final long serialVersionUID = 1344152444666540361L; |
| |
| private static final JsonMapper MAPPER = JsonMapper.builder().findAndAddModules().build(); |
| |
| private static final Tika TIKA = new Tika(); |
| |
| static { |
| TIKA.setMaxStringLength(-1); |
| } |
| |
| @Override |
| protected void doValidate(final PlainSchema schema, final PlainAttrValue attrValue) { |
| // check Binary schemas MIME Type mismatches |
| if (attrValue.getBinaryValue() != null) { |
| byte[] binaryValue = attrValue.getBinaryValue(); |
| String mimeType = TIKA.detect(binaryValue); |
| |
| boolean valid = true; |
| if (!mimeType.equals(attrValue.getAttr().getSchema().getMimeType())) { |
| if (MediaType.TEXT_PLAIN.equals(mimeType) |
| && MediaType.APPLICATION_JSON.equals(attrValue.getAttr().getSchema().getMimeType())) { |
| |
| String decoded = new String(binaryValue).trim(); |
| valid = (decoded.startsWith("{") && decoded.endsWith("}")) |
| || (decoded.startsWith("[") && decoded.endsWith("]")) |
| && isValidJSON(decoded); |
| } else { |
| valid = false; |
| } |
| } |
| if (!valid) { |
| throw new InvalidPlainAttrValueException( |
| "Found MIME type: '" + mimeType + "', expecting: '" |
| + attrValue.getAttr().getSchema().getMimeType() + '\''); |
| } |
| } |
| } |
| |
| private static boolean isValidJSON(final String value) { |
| try { |
| MAPPER.readTree(value); |
| return true; |
| } catch (IOException e) { |
| LOG.debug("Invalid JSON string: {}", value, e); |
| return false; |
| } |
| } |
| } |