Repair null-pointer exception in init method

Change-Id: I0669adbbc67987b3e7034fa1af5e1376e156b52d
Issue-ID: PORTAL-657
Signed-off-by: Lott, Christopher (cl778h) <cl778h@att.com>

1 files changed, 37 insertions, 45 deletions

diff --git a/ecomp-sdk/epsdk-fw/src/main/java/org/onap/portalsdk/core/onboarding/crossapi/CadiAuthFilter.java b/ecomp-sdk/epsdk-fw/src/main/java/org/onap/portalsdk/core/onboarding/crossapi/CadiAuthFilter.java
index 66effc0f..2336a514 100644
--- a/ecomp-sdk/epsdk-fw/src/main/java/org/onap/portalsdk/core/onboarding/crossapi/CadiAuthFilter.java
+++ b/ecomp-sdk/epsdk-fw/src/main/java/org/onap/portalsdk/core/onboarding/crossapi/CadiAuthFilter.java
@@ -40,6 +40,7 @@ package org.onap.portalsdk.core.onboarding.crossapi;
 import java.io.IOException;
 import java.util.ArrayList;
 import java.util.Arrays;
+import java.util.List;
 import java.util.regex.Matcher;
 import java.util.regex.Pattern;
 
@@ -49,81 +50,73 @@ import javax.servlet.ServletException;
 import javax.servlet.ServletRequest;
 import javax.servlet.ServletResponse;
 import javax.servlet.http.HttpServletRequest;
-import javax.servlet.http.HttpServletResponse;
 
 import org.apache.commons.logging.Log;
 import org.apache.commons.logging.LogFactory;
 import org.onap.aaf.cadi.filter.CadiFilter;
 import org.onap.portalsdk.core.onboarding.util.AuthUtil;
-import org.onap.portalsdk.core.onboarding.util.CipherUtil;
 import org.onap.portalsdk.core.onboarding.util.PortalApiConstants;
 import org.onap.portalsdk.core.onboarding.util.PortalApiProperties;
 
 public class CadiAuthFilter extends CadiFilter {
 
-	private static String include_url_endpoints ="";
-	private static String exclude_url_endpoints = "";
+	private static final Log logger = LogFactory.getLog(CadiAuthFilter.class);
+
 	public static final String AUTHORIZATION = "Authorization";
-	private static final Log logger = LogFactory.getLog(CipherUtil.class);
-	
+	public static final String EXCLUDE_URL_ENDPOINTS = "exclude_url_endpoints";
+	public static final String INCLUDE_URL_ENDPOINTS = "include_url_endpoints";
+	public static final String REMOTE = "remote";
+	private List<String> includeUrlEndPointList;
+	private List<String> excludeUrlEndPointList;
+
 	public void init(FilterConfig filterConfig) throws ServletException {
 		super.init(filterConfig);
-		include_url_endpoints = filterConfig.getInitParameter("include_url_endpoints");
-		exclude_url_endpoints = filterConfig.getInitParameter("exclude_url_endpoints");
-		logger.debug("include_url_endpoints values: "+ include_url_endpoints);
-		logger.debug("exclude_url_endpoints values: "+ exclude_url_endpoints);
+		String include_url_endpoints = filterConfig.getInitParameter(INCLUDE_URL_ENDPOINTS);
+		String exclude_url_endpoints = filterConfig.getInitParameter(EXCLUDE_URL_ENDPOINTS);
+		logger.debug(INCLUDE_URL_ENDPOINTS + ": " + include_url_endpoints);
+		logger.debug(EXCLUDE_URL_ENDPOINTS + ": " + exclude_url_endpoints);
+		if (include_url_endpoints == null || include_url_endpoints.isEmpty())
+			throw new ServletException("Filter init parameter " + INCLUDE_URL_ENDPOINTS + " is null or empty");
+		if (exclude_url_endpoints == null || exclude_url_endpoints.isEmpty())
+			throw new ServletException("Filter init parameter " + EXCLUDE_URL_ENDPOINTS + " is null or empty");
+		includeUrlEndPointList = new ArrayList<String>(Arrays.asList(include_url_endpoints.split(",")));
+		excludeUrlEndPointList = new ArrayList<String>(Arrays.asList(exclude_url_endpoints.split(",")));
 	}
 
-	public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain)
+	@Override
+	public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain) //
 			throws IOException, ServletException {
-		
-		if (include_url_endpoints.equals("") || include_url_endpoints == null || include_url_endpoints.isEmpty()) {
-			throw new NullPointerException("inlclude_url_endpoints is null");
+		if (excludeFilter(request, excludeUrlEndPointList)) {
+			logger.debug("doFilter: request excluded from cadifilter");
+			chain.doFilter(request, response);
+		} else if (includeFilter(request, includeUrlEndPointList)) {
+			logger.debug("doFilter: request is entering cadifilter");
+			super.doFilter(request, response, chain);
 		} else {
-			String includeUrlEndPointString = include_url_endpoints;
-			if (exclude_url_endpoints.equals("") || exclude_url_endpoints == null || exclude_url_endpoints.isEmpty()) {
-				throw new NullPointerException("exculde_url_endpoints is null");
-			}
-			String excludeUrlEndPointString = exclude_url_endpoints;
-			ArrayList<String> excludeUrlEndPointList = new ArrayList<String>(
-					Arrays.asList(excludeUrlEndPointString.split(",")));
-			ArrayList<String> includeUrlEndPointList = new ArrayList<String>(
-					Arrays.asList(includeUrlEndPointString.split(",")));
-			if (excludeFilter(request, excludeUrlEndPointList)){
-				logger.debug("Request excluded from cadifilter");
-				chain.doFilter(request, response);
-			}else if (includeFilter(request, includeUrlEndPointList)){
-				logger.debug("Request is entering cadifilter");
-				super.doFilter(request, response, chain);
-			}else
-				chain.doFilter(request, response);
+			chain.doFilter(request, response);
 		}
 	}
 
-
 	private String getUrl(ServletRequest request) {
-		String path = "";
 		HttpServletRequest httpRequest = (HttpServletRequest) request;
-		path = httpRequest.getRequestURI().substring(httpRequest.getContextPath().length() + 1);
-		return path;
+		return httpRequest.getRequestURI().substring(httpRequest.getContextPath().length() + 1);
 	}
 
-	private boolean excludeFilter(ServletRequest request, ArrayList<String> excludeUrlEndPointList) {
+	private boolean excludeFilter(ServletRequest request, List<String> excludeUrlEndPointList) {
 		boolean isUrlExcluded = false;
-		String Path = getUrl(request);
-
+		String path = getUrl(request);
 		for (String str : excludeUrlEndPointList) {
 			if (!isUrlExcluded)
-				isUrlExcluded = AuthUtil.matchPattern(Path, str.substring(1));
+				isUrlExcluded = AuthUtil.matchPattern(path, str.substring(1));
 		}
 		return isUrlExcluded;
 	}
 
-	private boolean includeFilter(ServletRequest request, ArrayList<String> includeapisList) {
+	private boolean includeFilter(ServletRequest request, List<String> includeapisList) {
 		boolean isauthenticated = false;
 		HttpServletRequest httpRequest = (HttpServletRequest) request;
-		
-		if(httpRequest.getHeader(AUTHORIZATION) == null)
+
+		if (httpRequest.getHeader(AUTHORIZATION) == null)
 			return isauthenticated;
 		// TODO: refactor to have exclusion pattern
 		String path = httpRequest.getRequestURI().substring(httpRequest.getContextPath().length() + 1);
@@ -131,8 +124,8 @@ public class CadiAuthFilter extends CadiFilter {
 			if (!isauthenticated)
 				isauthenticated = matchPattern(path, str);
 		}
-		if (isauthenticated && PortalApiProperties.getProperty(PortalApiConstants.ROLE_ACCESS_CENTRALIZED)
-				.equalsIgnoreCase("remote"))
+		if (isauthenticated
+				&& PortalApiProperties.getProperty(PortalApiConstants.ROLE_ACCESS_CENTRALIZED).equalsIgnoreCase(REMOTE))
 			isauthenticated = true;
 		else
 			isauthenticated = false;
@@ -154,7 +147,6 @@ public class CadiAuthFilter extends CadiFilter {
 					} else if (roleFunctionArray[i].equals("*")) {
 						match = true;
 					}
-
 				}
 			}
 			if (match)