/** Returns whether the page can be directly included. */
private static boolean isDirectInclude(ClassWebResource cwr, String path) {
final String ext = Servlets.getExtension(path);
final Extendlet extlet = ext != null ? cwr.getExtendlet(ext) : null;
if (extlet != null) {
try {
return extlet.getFeature(Extendlet.ALLOW_DIRECT_INCLUDE);
} catch (Throwable ex) { // backward compatibility
}
}
return true;
}
private boolean dispatch(Writer out, String page, Map params, int mode, boolean include)
throws IOException, ServletException {
// FUTURE: handle if ~./, PASS_THRU_ATTR and with query string
// In other words, we convert query string to params if
// PASS_THRU_ATTR and ~./ (to have a better performance)
if ((mode != PASS_THRU_ATTR && params != null)
|| !page.startsWith("~./")
|| page.indexOf('?') >= 0) return false;
// Bug 1801028: We cannot invoke ZumlExtendlet directly
// The real reason is unknown yet -- it could be due to
// the re-creation of ExecutionImpl
// However, the performance is not a major issue, so just skip
final ClassWebResource cwr = WebManager.getWebManager(_ctx).getClassWebResource();
if (!isDirectInclude(cwr, page)) return false;
Object old = null;
if (mode == PASS_THRU_ATTR) {
old = _request.getAttribute(Attributes.ARG);
if (params != null) _request.setAttribute(Attributes.ARG, params);
// If params=null, use the 'inherited' one (same as Servlets.include)
}
final String attrnm =
include ? "org.zkoss.web.servlet.include" : "org.zkoss.web.servlet.forward";
_request.setAttribute(attrnm, Boolean.TRUE);
// so Servlets.isIncluded returns correctly
try {
cwr.service(_request, HttpBufferedResponse.getInstance(_response, out), page.substring(2));
} finally {
_request.removeAttribute(attrnm);
if (mode == PASS_THRU_ATTR) _request.setAttribute(Attributes.ARG, old);
}
return true;
}
private static boolean shallSession(ClassWebResource cwr, String pi) {
return cwr.getExtendlet(Servlets.getExtension(pi, false)) != null
|| (pi != null && pi.indexOf('*') >= 0);
// Optimize the access of static resources (for GAE)
}
protected void doGet(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
final String pi = Https.getThisPathInfo(request);
// if (log.finerable()) log.finer("Path info: "+pi);
final ServletContext ctx = getServletContext();
final boolean withpi = pi != null && pi.length() != 0;
if (withpi && pi.startsWith(ClassWebResource.PATH_PREFIX)) {
// use HttpSession to avoid loading SerializableSession in GAE
// and don't retrieve session if possible
final ClassWebResource cwr = getClassWebResource();
final HttpSession hsess = shallSession(cwr, pi) ? request.getSession(false) : null;
Object oldsess = null;
if (hsess == null) {
oldsess = SessionsCtrl.getRawCurrent();
SessionsCtrl.setCurrent(new SessionResolverImpl(ctx, request));
// it might be created later
}
WebApp wapp;
Session sess;
final Object old =
hsess != null
? (wapp = WebManager.getWebAppIfAny(ctx)) != null
&& (sess = SessionsCtrl.getSession(wapp, hsess)) != null
? I18Ns.setup(sess, request, response, "UTF-8")
: I18Ns.setup(hsess, request, response, "UTF-8")
: Charsets.setup(null, request, response, "UTF-8");
try {
cwr.service(request, response, pi.substring(ClassWebResource.PATH_PREFIX.length()));
} finally {
if (hsess != null) I18Ns.cleanup(request, old);
else {
Charsets.cleanup(request, old);
SessionsCtrl.setRawCurrent(oldsess);
}
}
return; // done
}
final Session sess = WebManager.getSession(ctx, request, false);
if (withpi) {
final AuExtension aue = getAuExtensionByPath(pi);
if (aue == null) {
response.sendError(response.SC_NOT_FOUND);
log.debug("Unknown path info: " + pi);
return;
}
Object oldsess = null;
if (sess == null) {
oldsess = SessionsCtrl.getRawCurrent();
SessionsCtrl.setCurrent(new SessionResolverImpl(ctx, request));
// it might be created later
}
final Object old =
sess != null
? I18Ns.setup(sess, request, response, "UTF-8")
: Charsets.setup(null, request, response, "UTF-8");
try {
aue.service(request, response, pi);
} finally {
if (sess != null) I18Ns.cleanup(request, old);
else {
Charsets.cleanup(request, old);
SessionsCtrl.setRawCurrent(oldsess);
}
}
return; // done
}
// AU
if (sess == null) {
response.setIntHeader("ZK-Error", response.SC_GONE); // denote timeout
// Bug 1849088: rmDesktop might be sent after invalidate
// Bug 1859776: need send response to client for redirect or others
final WebApp wapp = WebManager.getWebAppIfAny(ctx);
final String dtid = getAuDecoder(wapp).getDesktopId(request);
if (dtid != null) sessionTimeout(request, response, wapp, dtid);
return;
}
// Feature 3285074 add no-cache for security risk.
response.setHeader("Pragma", "no-cache");
response.setHeader("Cache-Control", "no-cache");
response.setHeader("Cache-Control", "no-store");
response.setHeader("Expires", "-1");
final Object old = I18Ns.setup(sess, request, response, "UTF-8");
try {
process(sess, request, response);
} finally {
I18Ns.cleanup(request, old);
}
}