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The Core Camel Java DSL based router
/**
* 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.camel.processor;
import java.util.Arrays;
import java.util.HashSet;
import java.util.Set;
import java.util.regex.Pattern;
import org.apache.camel.spi.MaskingFormatter;
/**
* The {@link MaskingFormatter} that searches the specified keywards in the source
* and replace its value with mask string. By default passphrase, password and secretKey
* are used as keywards to replace its value.
*/
public class DefaultMaskingFormatter implements MaskingFormatter {
private static final Set DEFAULT_KEYWORDS = new HashSet<>(Arrays.asList("passphrase", "password", "secretKey"));
private Set keywords;
private boolean maskKeyValue;
private boolean maskXmlElement;
private boolean maskJson;
private String maskString = "xxxxx";
private Pattern keyValueMaskPattern;
private Pattern xmlElementMaskPattern;
private Pattern jsonMaskPattern;
public DefaultMaskingFormatter() {
this(DEFAULT_KEYWORDS, true, true, true);
}
public DefaultMaskingFormatter(boolean maskKeyValue, boolean maskXml, boolean maskJson) {
this(DEFAULT_KEYWORDS, maskKeyValue, maskXml, maskJson);
}
public DefaultMaskingFormatter(Set keywords, boolean maskKeyValue, boolean maskXmlElement, boolean maskJson) {
this.keywords = keywords;
setMaskKeyValue(maskKeyValue);
setMaskXmlElement(maskXmlElement);
setMaskJson(maskJson);
}
public String format(String source) {
if (keywords == null || keywords.isEmpty()) {
return source;
}
String answer = source;
if (maskKeyValue) {
answer = keyValueMaskPattern.matcher(answer).replaceAll("$1\"" + maskString + "\"");
}
if (maskXmlElement) {
answer = xmlElementMaskPattern.matcher(answer).replaceAll("$1" + maskString + "$3");
}
if (maskJson) {
answer = jsonMaskPattern.matcher(answer).replaceAll("$1\"" + maskString + "\"");
}
return answer;
}
public boolean isMaskKeyValue() {
return maskKeyValue;
}
public void setMaskKeyValue(boolean maskKeyValue) {
this.maskKeyValue = maskKeyValue;
if (maskKeyValue) {
keyValueMaskPattern = createKeyValueMaskPattern(keywords);
} else {
keyValueMaskPattern = null;
}
}
public boolean isMaskXmlElement() {
return maskXmlElement;
}
public void setMaskXmlElement(boolean maskXml) {
this.maskXmlElement = maskXml;
if (maskXml) {
xmlElementMaskPattern = createXmlElementMaskPattern(keywords);
} else {
xmlElementMaskPattern = null;
}
}
public boolean isMaskJson() {
return maskJson;
}
public void setMaskJson(boolean maskJson) {
this.maskJson = maskJson;
if (maskJson) {
jsonMaskPattern = createJsonMaskPattern(keywords);
} else {
jsonMaskPattern = null;
}
}
public String getMaskString() {
return maskString;
}
public void setMaskString(String maskString) {
this.maskString = maskString;
}
protected Pattern createKeyValueMaskPattern(Set keywords) {
StringBuilder regex = createOneOfThemRegex(keywords);
if (regex == null) {
return null;
}
regex.insert(0, "([\\w]*(?:");
regex.append(")[\\w]*[\\s]*?=[\\s]*?)([\\S&&[^'\",\\}\\]\\)]]+[\\S&&[^,\\}\\]\\)>]]*?|\"[^\"]*?\"|'[^']*?')");
return Pattern.compile(regex.toString(), Pattern.CASE_INSENSITIVE);
}
protected Pattern createXmlElementMaskPattern(Set keywords) {
StringBuilder regex = createOneOfThemRegex(keywords);
if (regex == null) {
return null;
}
regex.insert(0, "(<([\\w]*(?:");
regex.append(")[\\w]*)(?:[\\s]+.+)*?>[\\s]*?)(?:[\\S&&[^<]]+(?:\\s+[\\S&&[^<]]+)*?)([\\s]*?)");
return Pattern.compile(regex.toString(), Pattern.CASE_INSENSITIVE);
}
protected Pattern createJsonMaskPattern(Set keywords) {
StringBuilder regex = createOneOfThemRegex(keywords);
if (regex == null) {
return null;
}
regex.insert(0, "(\"(?:[^\"]|(?:\\\"))*?(?:");
regex.append(")(?:[^\"]|(?:\\\"))*?\"\\s*?\\:\\s*?)(?:\"(?:[^\"]|(?:\\\"))*?\")");
return Pattern.compile(regex.toString(), Pattern.CASE_INSENSITIVE);
}
protected StringBuilder createOneOfThemRegex(Set keywords) {
StringBuilder regex = new StringBuilder();
if (keywords == null || keywords.isEmpty()) {
return null;
}
String[] strKeywords = keywords.toArray(new String[0]);
regex.append(Pattern.quote(strKeywords[0]));
if (strKeywords.length > 1) {
for (int i = 1; i < strKeywords.length; i++) {
regex.append('|');
regex.append(Pattern.quote(strKeywords[i]));
}
}
return regex;
}
}