X-Git-Url: https://gerrit.onap.org/r/gitweb?a=blobdiff_plain;f=ecomp-portal-BE-os%2Fsrc%2Fmain%2Fjava%2Forg%2Fonap%2Fportalapp%2Ffilter%2FSecurityXssValidator.java;fp=ecomp-portal-BE-os%2Fsrc%2Fmain%2Fjava%2Forg%2Fonap%2Fportalapp%2Ffilter%2FSecurityXssValidator.java;h=4d6a9fe20d8a07f76e6cff0a5ae88613aa6656dd;hb=21a8761f684745bb300e075c7e98ad897ace9eed;hp=0000000000000000000000000000000000000000;hpb=3af8af1310d5a27cb58be29505573f0bbdc1717c;p=portal.git

diff --git a/ecomp-portal-BE-os/src/main/java/org/onap/portalapp/filter/SecurityXssValidator.java b/ecomp-portal-BE-os/src/main/java/org/onap/portalapp/filter/SecurityXssValidator.java
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+++ b/ecomp-portal-BE-os/src/main/java/org/onap/portalapp/filter/SecurityXssValidator.java
@@ -0,0 +1,207 @@
+/*-
+ * ============LICENSE_START==========================================
+ * ONAP Portal
+ * ===================================================================
+ * Copyright © 2017 AT&T Intellectual Property. All rights reserved.
+ * ===================================================================
+ *
+ * Unless otherwise specified, all software contained herein is licensed
+ * under the Apache License, Version 2.0 (the "License");
+ * you may not use this software 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.
+ *
+ * Unless otherwise specified, all documentation contained herein is licensed
+ * under the Creative Commons License, Attribution 4.0 Intl. (the "License");
+ * you may not use this documentation except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *             https://creativecommons.org/licenses/by/4.0/
+ *
+ * Unless required by applicable law or agreed to in writing, documentation
+ * 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.
+ *
+ * ============LICENSE_END============================================
+ *
+ * ECOMP is a trademark and service mark of AT&T Intellectual Property.
+ */
+package org.onap.portalapp.filter;
+
+import java.util.ArrayList;
+import java.util.List;
+import java.util.concurrent.locks.Lock;
+import java.util.concurrent.locks.ReentrantLock;
+import java.util.regex.Pattern;
+
+import org.apache.commons.lang.NotImplementedException;
+import org.apache.commons.lang.StringUtils;
+import org.apache.commons.lang3.StringEscapeUtils;
+import org.onap.portalsdk.core.logging.logic.EELFLoggerDelegate;
+import org.onap.portalsdk.core.util.SystemProperties;
+import org.owasp.esapi.ESAPI;
+import org.owasp.esapi.codecs.Codec;
+import org.owasp.esapi.codecs.MySQLCodec;
+import org.owasp.esapi.codecs.MySQLCodec.Mode;
+import org.owasp.esapi.codecs.OracleCodec;
+
+public class SecurityXssValidator {
+
+	private EELFLoggerDelegate logger = EELFLoggerDelegate.getLogger(SecurityXssValidator.class);
+
+	private static final String MYSQL_DB = "mysql";
+	private static final String ORACLE_DB = "oracle";
+	private static final String MARIA_DB = "mariadb";
+	private static final int FLAGS = Pattern.CASE_INSENSITIVE | Pattern.MULTILINE | Pattern.DOTALL;
+	static SecurityXssValidator validator = null;
+	private static Codec instance;
+	private static final Lock lock = new ReentrantLock();
+
+	public static SecurityXssValidator getInstance() {
+
+		if (validator == null) {
+			lock.lock();
+			try {
+				if (validator == null)
+					validator = new SecurityXssValidator();
+			} finally {
+				lock.unlock();
+			}
+		}
+
+		return validator;
+	}
+
+	private SecurityXssValidator() {
+		// Avoid anything between script tags
+		XSS_INPUT_PATTERNS.add(Pattern.compile("<script>(.*?)</script>", FLAGS));
+
+		// avoid iframes
+		XSS_INPUT_PATTERNS.add(Pattern.compile("<iframe(.*?)>(.*?)</iframe>", FLAGS));
+
+		// Avoid anything in a src='...' type of expression
+		XSS_INPUT_PATTERNS.add(Pattern.compile("src[\r\n]*=[\r\n]*\\\'(.*?)\\\'", FLAGS));
+
+		XSS_INPUT_PATTERNS.add(Pattern.compile("src[\r\n]*=[\r\n]*\\\"(.*?)\\\"", FLAGS));
+
+		XSS_INPUT_PATTERNS.add(Pattern.compile("src[\r\n]*=[\r\n]*([^>]+)", FLAGS));
+
+		// Remove any lonesome </script> tag
+		XSS_INPUT_PATTERNS.add(Pattern.compile("</script>", FLAGS));
+
+		XSS_INPUT_PATTERNS.add(Pattern.compile(".*(<script>|</script>).*", FLAGS));
+
+		XSS_INPUT_PATTERNS.add(Pattern.compile(".*(<iframe>|</iframe>).*", FLAGS));
+
+		// Remove any lonesome <script ...> tag
+		XSS_INPUT_PATTERNS.add(Pattern.compile("<script(.*?)>", FLAGS));
+
+		// Avoid eval(...) expressions
+		XSS_INPUT_PATTERNS.add(Pattern.compile("eval\\((.*?)\\)", FLAGS));
+
+		// Avoid expression(...) expressions
+		XSS_INPUT_PATTERNS.add(Pattern.compile("expression\\((.*?)\\)", FLAGS));
+
+		// Avoid javascript:... expressions
+		XSS_INPUT_PATTERNS.add(Pattern.compile(".*(javascript:|vbscript:).*", FLAGS));
+
+		// Avoid onload= expressions
+		XSS_INPUT_PATTERNS.add(Pattern.compile(".*(onload(.*?)=).*", FLAGS));
+	}
+
+	private List<Pattern> XSS_INPUT_PATTERNS = new ArrayList<Pattern>();
+
+	/**
+	 * * This method takes a string and strips out any potential script injections.
+	 * 
+	 * @param value
+	 * @return String - the new "sanitized" string.
+	 */
+	public String stripXSS(String value) {
+
+		try {
+
+			if (StringUtils.isNotBlank(value)) {
+
+				value = StringEscapeUtils.escapeHtml4(value);
+
+				value = ESAPI.encoder().canonicalize(value);
+
+				// Avoid null characters
+				value = value.replaceAll("\0", "");
+
+				for (Pattern xssInputPattern : XSS_INPUT_PATTERNS) {
+					value = xssInputPattern.matcher(value).replaceAll("");
+				}
+			}
+
+		} catch (Exception e) {
+			logger.error(EELFLoggerDelegate.errorLogger, "stripXSS() failed", e);
+		}
+
+		return value;
+	}
+
+	public Boolean denyXSS(String value) {
+		Boolean flag = Boolean.FALSE;
+		try {
+			if (StringUtils.isNotBlank(value)) {
+				value = ESAPI.encoder().canonicalize(value);
+				for (Pattern xssInputPattern : XSS_INPUT_PATTERNS) {
+					if (xssInputPattern.matcher(value).matches()) {
+						flag = Boolean.TRUE;
+						break;
+					}
+
+				}
+			}
+
+		} catch (Exception e) {
+			logger.error(EELFLoggerDelegate.errorLogger, "denyXSS() failed", e);
+		}
+
+		return flag;
+	}
+
+	public Codec getCodec() {
+		try {
+			if (null == instance) {
+				if (StringUtils.containsIgnoreCase(SystemProperties.getProperty(SystemProperties.DB_DRIVER), MYSQL_DB)
+						|| StringUtils.containsIgnoreCase(SystemProperties.getProperty(SystemProperties.DB_DRIVER),
+								MARIA_DB)) {
+					instance = new MySQLCodec(Mode.STANDARD);
+
+				} else if (StringUtils.containsIgnoreCase(SystemProperties.getProperty(SystemProperties.DB_DRIVER),
+						ORACLE_DB)) {
+					instance = new OracleCodec();
+				} else {
+					throw new NotImplementedException("Handling for data base \""
+							+ SystemProperties.getProperty(SystemProperties.DB_DRIVER) + "\" not yet implemented.");
+				}
+			}
+
+		} catch (Exception ex) {
+			logger.error(EELFLoggerDelegate.errorLogger, "getCodec() failed", ex);
+		}
+		return instance;
+
+	}
+
+	public List<Pattern> getXSS_INPUT_PATTERNS() {
+		return XSS_INPUT_PATTERNS;
+	}
+
+	public void setXSS_INPUT_PATTERNS(List<Pattern> xSS_INPUT_PATTERNS) {
+		XSS_INPUT_PATTERNS = xSS_INPUT_PATTERNS;
+	}
+
+}
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