| /* |
| * 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 com.opensymphony.xwork2.security; |
| |
| import com.opensymphony.xwork2.XWorkConstants; |
| import com.opensymphony.xwork2.inject.Inject; |
| import com.opensymphony.xwork2.util.TextParseUtil; |
| import org.apache.logging.log4j.LogManager; |
| import org.apache.logging.log4j.Logger; |
| |
| import java.util.Arrays; |
| import java.util.HashSet; |
| import java.util.Set; |
| import java.util.regex.Pattern; |
| |
| public class DefaultAcceptedPatternsChecker implements AcceptedPatternsChecker { |
| |
| private static final Logger LOG = LogManager.getLogger(DefaultAcceptedPatternsChecker.class); |
| |
| public static final String[] ACCEPTED_PATTERNS = { |
| "\\w+((\\.\\w+)|(\\[\\d+\\])|(\\(\\d+\\))|(\\['(\\w|[\\u4e00-\\u9fa5])+'\\])|(\\('(\\w|[\\u4e00-\\u9fa5])+'\\)))*" |
| }; |
| |
| private Set<Pattern> acceptedPatterns; |
| |
| public DefaultAcceptedPatternsChecker() { |
| setAcceptedPatterns(ACCEPTED_PATTERNS); |
| } |
| |
| @Inject(value = XWorkConstants.OVERRIDE_ACCEPTED_PATTERNS, required = false) |
| protected void setOverrideAcceptedPatterns(String acceptablePatterns) { |
| LOG.warn("Overriding accepted patterns [{}] with [{}], be aware that this affects all instances and safety of your application!", |
| acceptedPatterns, acceptablePatterns); |
| acceptedPatterns = new HashSet<>(); |
| for (String pattern : TextParseUtil.commaDelimitedStringToSet(acceptablePatterns)) { |
| acceptedPatterns.add(Pattern.compile(pattern, Pattern.CASE_INSENSITIVE)); |
| } |
| } |
| |
| @Inject(value = XWorkConstants.ADDITIONAL_ACCEPTED_PATTERNS, required = false) |
| protected void setAdditionalAcceptedPatterns(String acceptablePatterns) { |
| LOG.warn("Adding additional global patterns [{}] to accepted patterns!", acceptablePatterns); |
| for (String pattern : TextParseUtil.commaDelimitedStringToSet(acceptablePatterns)) { |
| acceptedPatterns.add(Pattern.compile(pattern, Pattern.CASE_INSENSITIVE)); |
| } |
| } |
| |
| public void setAcceptedPatterns(String commaDelimitedPatterns) { |
| setAcceptedPatterns(TextParseUtil.commaDelimitedStringToSet(commaDelimitedPatterns)); |
| } |
| |
| public void setAcceptedPatterns(String[] additionalPatterns) { |
| setAcceptedPatterns(new HashSet<>(Arrays.asList(additionalPatterns))); |
| } |
| |
| public void setAcceptedPatterns(Set<String> patterns) { |
| if (acceptedPatterns == null) { |
| // Limit unwanted log entries (for 1st call, acceptedPatterns null) |
| LOG.debug("Sets accepted patterns to [{}], note this impacts the safety of your application!", patterns); |
| } |
| else { |
| LOG.warn("Replacing accepted patterns [{}] with [{}], be aware that this affects all instances and safety of your application!", |
| acceptedPatterns, patterns); |
| } |
| acceptedPatterns = new HashSet<>(patterns.size()); |
| for (String pattern : patterns) { |
| acceptedPatterns.add(Pattern.compile(pattern, Pattern.CASE_INSENSITIVE)); |
| } |
| } |
| |
| public IsAccepted isAccepted(String value) { |
| for (Pattern acceptedPattern : acceptedPatterns) { |
| if (acceptedPattern.matcher(value).matches()) { |
| LOG.trace("[{}] matches accepted pattern [{}]", value, acceptedPattern); |
| return IsAccepted.yes(acceptedPattern.toString()); |
| } |
| } |
| return IsAccepted.no(acceptedPatterns.toString()); |
| } |
| |
| public Set<Pattern> getAcceptedPatterns() { |
| return acceptedPatterns; |
| } |
| |
| } |