/**
* @see javax.servlet.Filter#doFilter(javax.servlet.ServletRequest, javax.servlet.ServletResponse, javax.servlet.FilterChain)
*/
public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain) throws IOException, ServletException {
HttpServletRequest httpRequest = (HttpServletRequest) request;
HttpServletResponseWrapper wrapper = new HttpServletResponseWrapper((HttpServletResponse) response);
// Debug.logInfo("Running ContextFilter.doFilter", module);
// ----- Servlet Object Setup -----
// set the cached class loader for more speedy running in this thread
String disableCachedClassloader = config.getInitParameter("disableCachedClassloader");
if (disableCachedClassloader == null || !"Y".equalsIgnoreCase(disableCachedClassloader)) {
Thread.currentThread().setContextClassLoader(localCachedClassLoader);
}
// set the webSiteId in the session
httpRequest.getSession().setAttribute("webSiteId", config.getServletContext().getAttribute("webSiteId"));
// set the ServletContext in the request for future use
request.setAttribute("servletContext", config.getServletContext());
// set the filesystem path of context root.
request.setAttribute("_CONTEXT_ROOT_", config.getServletContext().getRealPath("/"));
// set the server root url
StringBuffer serverRootUrl = UtilHttp.getServerRootUrl(httpRequest);
request.setAttribute("_SERVER_ROOT_URL_", serverRootUrl.toString());
// request attributes from redirect call
String reqAttrMapHex = (String) httpRequest.getSession().getAttribute("_REQ_ATTR_MAP_");
if (UtilValidate.isNotEmpty(reqAttrMapHex)) {
byte[] reqAttrMapBytes = StringUtil.fromHexString(reqAttrMapHex);
Map<String, Object> reqAttrMap = checkMap(UtilObject.getObject(reqAttrMapBytes), String.class, Object.class);
if (reqAttrMap != null) {
for (Map.Entry<String, Object> entry: reqAttrMap.entrySet()) {
request.setAttribute(entry.getKey(), entry.getValue());
}
}
httpRequest.getSession().removeAttribute("_REQ_ATTR_MAP_");
}
// ----- Context Security -----
// check if we are disabled
String disableSecurity = config.getInitParameter("disableContextSecurity");
if (disableSecurity != null && "Y".equalsIgnoreCase(disableSecurity)) {
chain.doFilter(request, response);
return;
}
// check if we are told to redirect everthing
String redirectAllTo = config.getInitParameter("forceRedirectAll");
if (redirectAllTo != null && redirectAllTo.length() > 0) {
// little trick here so we don't loop on ourself
if (httpRequest.getSession().getAttribute("_FORCE_REDIRECT_") == null) {
httpRequest.getSession().setAttribute("_FORCE_REDIRECT_", "true");
Debug.logWarning("Redirecting user to: " + redirectAllTo, module);
if (!redirectAllTo.toLowerCase().startsWith("http")) {
redirectAllTo = httpRequest.getContextPath() + redirectAllTo;
}
wrapper.sendRedirect(redirectAllTo);
return;
} else {
httpRequest.getSession().removeAttribute("_FORCE_REDIRECT_");
chain.doFilter(request, response);
return;
}
}
// test to see if we have come through the control servlet already, if not do the processing
if (request.getAttribute(ContextFilter.FORWARDED_FROM_SERVLET) == null) {
// Debug.logInfo("In ContextFilter.doFilter, FORWARDED_FROM_SERVLET is NOT set", module);
String allowedPath = config.getInitParameter("allowedPaths");
String redirectPath = config.getInitParameter("redirectPath");
String errorCode = config.getInitParameter("errorCode");
List<String> allowList = StringUtil.split(allowedPath, ":");
allowList.add("/"); // No path is allowed.
allowList.add(""); // No path is allowed.
if (debug) Debug.log("[Request]: " + httpRequest.getRequestURI(), module);
String requestPath = httpRequest.getServletPath();
if (requestPath == null) requestPath = "";
if (requestPath.lastIndexOf("/") > 0) {
if (requestPath.indexOf("/") == 0) {
requestPath = "/" + requestPath.substring(1, requestPath.indexOf("/", 1));
} else {
requestPath = requestPath.substring(1, requestPath.indexOf("/"));
}
}
String requestInfo = httpRequest.getServletPath();
if (requestInfo == null) requestInfo = "";
if (requestInfo.lastIndexOf("/") >= 0) {
requestInfo = requestInfo.substring(0, requestInfo.lastIndexOf("/")) + "/*";
}
StringBuilder contextUriBuffer = new StringBuilder();
if (httpRequest.getContextPath() != null) {
contextUriBuffer.append(httpRequest.getContextPath());
}
if (httpRequest.getServletPath() != null) {
contextUriBuffer.append(httpRequest.getServletPath());
}
if (httpRequest.getPathInfo() != null) {
contextUriBuffer.append(httpRequest.getPathInfo());
}
String contextUri = contextUriBuffer.toString();
// Verbose Debugging
if (Debug.verboseOn()) {
for (String allow: allowList) {
Debug.logVerbose("[Allow]: " + allow, module);
}
Debug.logVerbose("[Request path]: " + requestPath, module);
Debug.logVerbose("[Request info]: " + requestInfo, module);
Debug.logVerbose("[Servlet path]: " + httpRequest.getServletPath(), module);
}
// check to make sure the requested url is allowed
if (!allowList.contains(requestPath) && !allowList.contains(requestInfo) && !allowList.contains(httpRequest.getServletPath())) {
String filterMessage = "[Filtered request]: " + contextUri;
if (redirectPath == null) {
int error = 404;
try {
error = Integer.parseInt(errorCode);
} catch (NumberFormatException nfe) {
Debug.logWarning(nfe, "Error code specified would not parse to Integer : " + errorCode, module);
}
filterMessage = filterMessage + " (" + error + ")";
wrapper.sendError(error, contextUri);
} else {
filterMessage = filterMessage + " (" + redirectPath + ")";
if (!redirectPath.toLowerCase().startsWith("http")) {
redirectPath = httpRequest.getContextPath() + redirectPath;
}
wrapper.sendRedirect(redirectPath);
}
Debug.logWarning(filterMessage, module);
return;
}
}