org.sonar.plugins.xml.checks.security.web.CrossOriginResourceSharingCheck Maven / Gradle / Ivy
/*
* SonarQube XML Plugin
* Copyright (C) 2010-2021 SonarSource SA
* mailto:info AT sonarsource DOT com
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 3 of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this program; if not, write to the Free Software Foundation,
* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
package org.sonar.plugins.xml.checks.security.web;
import java.util.regex.Pattern;
import javax.xml.xpath.XPathExpression;
import org.sonar.check.Rule;
import org.sonarsource.analyzer.commons.xml.XPathBuilder;
import org.sonarsource.analyzer.commons.xml.XmlFile;
@Rule(key = "S5122")
public class CrossOriginResourceSharingCheck extends AbstractWebXmlCheck {
private static final Pattern STAR_IN_COMMA_SEPARATED_LIST_REGEX = Pattern.compile("(^|,)\\*(,|$)");
private XPathExpression corsAllowedOrigins = XPathBuilder
.forExpression("/j:web-app" +
"/j:filter[j:filter-class='org.apache.catalina.filters.CorsFilter']" +
"/j:init-param[j:param-name='cors.allowed.origins']" +
"/j:param-value" +
"/text()")
.withNamespace("j", "http://xmlns.jcp.org/xml/ns/javaee")
.build();
@Override
void scanWebXml(XmlFile file) {
evaluateAsList(corsAllowedOrigins, file.getDocument()).stream()
.filter(node -> STAR_IN_COMMA_SEPARATED_LIST_REGEX.matcher(node.getNodeValue()).find())
.forEach(node -> reportIssue(node, "Make sure this permissive CORS policy is safe here."));
}
}