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* Copyright 2004 The Apache Software Foundation
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package org.apache.catalina.valves;
import org.apache.catalina.HttpResponse;
import org.apache.catalina.Logger;
import org.apache.catalina.Request;
import org.apache.catalina.Response;
import org.apache.catalina.util.ServerInfo;
import org.apache.catalina.util.StringManager;
import org.glassfish.logging.annotation.LogMessageInfo;
import org.glassfish.web.util.HtmlEntityEncoder;
import javax.servlet.RequestDispatcher;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.io.Writer;
import java.text.MessageFormat;
import java.util.Collection;
import java.util.Locale;
import java.util.logging.Level;
/**
* <p>Implementation of a Valve that outputs HTML error pages.</p>
*
* <p>This Valve should be attached at the Host level, although it will work
* if attached to a Context.</p>
*
* <p>HTML code from the Cocoon 2 project.</p>
*
* @author Remy Maucherat
* @author Craig R. McClanahan
* @author <a href="mailto:nicolaken@supereva.it">Nicola Ken Barozzi</a> Aisa
* @author <a href="mailto:stefano@apache.org">Stefano Mazzocchi</a>
* @version $Revision: 1.19 $ $Date: 2007/05/05 05:32:41 $
*/
public class ErrorReportValve
extends ValveBase {
@LogMessageInfo(
message = "status.setContentType",
level = "WARNING"
)
public static final String SET_CONTENT_TYPE_EXCEPTION = "AS-WEB-CORE-00492";
/**
* The descriptive information related to this implementation.
*/
private static final String info =
"org.apache.catalina.valves.ErrorReportValve/1.0";
/**
* The StringManager for this package.
*/
protected static final StringManager sm =
StringManager.getManager(Constants.Package);
// ----------------------------------------------------- Instance Variables
/**
* The debugging detail level for this component.
*/
private int debug = 0;
// ------------------------------------------------------------- Properties
/**
* Return descriptive information about this Valve implementation.
*/
public String getInfo() {
return (info);
}
// --------------------------------------------------------- Public Methods
/**
* Invoke the next Valve in the sequence. When the invoke returns, check
* the response state, and output an error report is necessary.
*
* @param request The servlet request to be processed
* @param response The servlet response to be created
*
* @exception IOException if an input/output error occurs
* @exception ServletException if a servlet error occurs
*/
public int invoke(Request request, Response response)
throws IOException, ServletException {
// Perform the request
return INVOKE_NEXT;
}
public void postInvoke(Request request, Response response)
throws IOException, ServletException {
ServletRequest sreq = (ServletRequest) request;
Throwable throwable =
(Throwable) sreq.getAttribute(RequestDispatcher.ERROR_EXCEPTION);
ServletResponse sresp = (ServletResponse) response;
if (sresp.isCommitted()) {
return;
}
if (throwable != null) {
// The response is an error
response.setError();
// START PWC 6254469
// Save (and later restore) the response encoding, because the
// following call to reset() will reset it to the default
// encoding (ISO-8859-1).
String responseCharEnc = sresp.getCharacterEncoding();
// END PWC 6254469
HttpServletResponse sresponse = (HttpServletResponse) response;
// START IT 13858
Collection<String> cookieHeaders = sresponse.getHeaders("Set-Cookie");
// END IT 13858
// Reset the response (if possible)
try {
sresp.reset();
} catch (IllegalStateException e) {
;
}
// START PWC 6254469
/*
* Restore the previously saved response encoding only if it is
* different from the default (ISO-8859-1). This is important so
* that a subsequent call to ServletResponse.setLocale() has an
* opportunity to set it so it corresponds to the resource bundle
* locale (see 6412710)
*/
if (responseCharEnc != null && !responseCharEnc.equals(
org.glassfish.grizzly.http.util.Constants.DEFAULT_HTTP_CHARACTER_ENCODING)) {
sresp.setCharacterEncoding(responseCharEnc);
}
// END PWC 6254469
// START IT 13858
for (String cookieHeader : cookieHeaders) {
sresponse.addHeader("Set-Cookie", cookieHeader);
}
// END IT 13858
/* GlassFish 6386229
if (sresponse instanceof HttpServletResponse)
((HttpServletResponse) sresponse).sendError
(HttpServletResponse.SC_INTERNAL_SERVER_ERROR);
*/
// START GlassFish 6386229
sresponse.sendError(HttpServletResponse.SC_INTERNAL_SERVER_ERROR);
// END GlassFish 6386229
}
response.setSuspended(false);
sresp.setContentType("text/html");
try {
report(request, response, throwable);
} catch (Throwable tt) {
;
}
}
/**
* Return a String rendering of this object.
*/
public String toString() {
StringBuilder sb = new StringBuilder("ErrorReportValve[");
sb.append(container.getName());
sb.append("]");
return (sb.toString());
}
// ------------------------------------------------------ Protected Methods
/**
* Prints out an error report.
*
* @param request The request being processed
* @param response The response being generated
* @param throwable The exception that occurred (which possibly wraps
* a root cause exception
*/
protected void report(Request request, Response response,
Throwable throwable)
throws IOException {
/* GlassFish 6386229
// Do nothing on non-HTTP responses
if (!(response instanceof HttpResponse))
return;
*/
HttpResponse hresponse = (HttpResponse) response;
/* GlassFish 6386229
if (!(response instanceof HttpServletResponse))
return;
*/
HttpServletResponse hres = (HttpServletResponse) response;
int statusCode = hresponse.getStatus();
// Do nothing on a 1xx, 2xx and 3xx status
// Do nothing if anything has been written already
if (statusCode < 400 || (response.getContentCount() > 0))
return;
Throwable rootCause = null;
if (throwable != null) {
if (throwable instanceof ServletException)
rootCause = ((ServletException) throwable).getRootCause();
}
String message = hresponse.getMessage();
/* S1AS 4878272
if (message == null)
message = "";
*/
// BEGIN S1AS 4878272
if (message == null) {
message = hresponse.getDetailMessage();
}
if (message == null) {
message = "";
} else {
message = HtmlEntityEncoder.encodeXSS(message);
}
// END S1AS 4878272
// Do nothing if there is no report for the specified status code
String report = null;
try {
/* SJSAS 6412710
report = sm.getString("http." + statusCode, message);
*/
// START SJSAS 6412710
report = sm.getString("http." + statusCode,
hres.getLocale());
// END SJSAS 6412710
} catch (Throwable t) {
;
}
if (report == null)
return;
String errorPage = makeErrorPage(statusCode, message,
throwable, rootCause,
report, hres);
// START SJSAS 6412710
/*
* If throwable is not null, we've already preserved any non-default
* response encoding in postInvoke(), so that the throwable's exception
* message can be delivered to the client without any loss of
* information. The following call to ServletResponse.setLocale()
* will not override the response encoding in this case.
* For all other cases, the response encoding will be set according to
* the resource bundle locale.
*/
hres.setLocale(sm.getResourceBundleLocale(hres.getLocale()));
// END SJSAS 6412710
/* PWC 6254469
// set the charset part of content type before getting the writer
*/
try {
hres.setContentType("text/html");
/* PWC 6254469
hres.setCharacterEncoding("UTF-8");
*/
} catch (Throwable t) {
if (debug >= 1)
log(rb.getString(SET_CONTENT_TYPE_EXCEPTION), t);
}
try {
Writer writer = response.getReporter();
if (writer != null) {
// If writer is null, it's an indication that the response has
// been hard committed already, which should never happen
writer.write(errorPage);
}
} catch (IOException e) {
;
} catch (IllegalStateException e) {
;
}
}
/**
* Log a message on the Logger associated with our Container (if any).
*
* @param message Message to be logged
*/
protected void log(String message) {
Logger logger = container.getLogger();
if (logger != null) {
logger.log(this.toString() + ": " + message);
} else {
log.log(Level.INFO, this.toString() + ": " + message);
}
}
/**
* Log a message on the Logger associated with our Container (if any).
*
* @param message Message to be logged
* @param t Associated exception
*/
protected void log(String message, Throwable t) {
Logger logger = container.getLogger();
if (logger != null) {
logger.log(this.toString() + ": " + message, t, Logger.WARNING);
} else {
log.log(Level.WARNING, this.toString() + ": " + message, t);
}
}
public static String makeErrorPage(int statusCode,
String message,
Throwable throwable,
Throwable rootCause,
String report,
HttpServletResponse response) {
// START SJSAS 6412710
Locale responseLocale = response.getLocale();
// END SJSAS 6412710
String serverInfo = ServerInfo.getPublicServerInfo();
StringBuilder sb = new StringBuilder();
MessageFormat mf = new MessageFormat("");
mf.setLocale(responseLocale);
sb.append("<!DOCTYPE html PUBLIC \"-//W3C//DTD XHTML 1.0 Strict//EN\"");
sb.append(" \"http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd\">");
sb.append("<html xmlns=\"http://www.w3.org/1999/xhtml\"><head><title>");
if (serverInfo != null && !serverInfo.isEmpty()) {
sb.append(serverInfo).append(" - ");
}
// START SJSAS 6412710
sb.append(sm.getString("errorReportValve.errorReport",
responseLocale));
// END SJSAS 6412710
sb.append("</title>");
sb.append("<style type=\"text/css\"><!--");
sb.append(org.apache.catalina.util.TomcatCSS.TOMCAT_CSS);
sb.append("--></style> ");
sb.append("</head><body>");
sb.append("<h1>");
// START SJSAS 6412710
sb.append(sm.getString("errorReportValve.statusHeader",
String.valueOf(statusCode), message,
responseLocale)).append("</h1>");
// END SJSAS 6412710
sb.append("<hr/>");
sb.append("<p><b>type</b> ");
if (throwable != null) {
// START SJJAS 6412710
sb.append(sm.getString("errorReportValve.exceptionReport",
responseLocale));
// END SJSAS 6412710
} else {
// START SJSAS 6412710
sb.append(sm.getString("errorReportValve.statusReport",
responseLocale));
// END SJSAS 6412710
}
sb.append("</p>");
sb.append("<p><b>");
// START SJSAS 6412710
sb.append(sm.getString("errorReportValve.message",
responseLocale));
// END SJSAS 6412710
sb.append("</b>");
sb.append(message).append("</p>");
sb.append("<p><b>");
// START SJSAS 6412710
sb.append(sm.getString("errorReportValve.description",
responseLocale));
// END SJSAS 6412710
sb.append("</b>");
sb.append(report);
sb.append("</p>");
// exception class name or stacktrace can reveal the underlying product
// name, so do not include it if product name property has been cleared.
if (throwable != null && serverInfo != null && !serverInfo.isEmpty()) {
/* GlassFish 823
String stackTrace = JdkCompat.getJdkCompat()
.getPartialServletStackTrace(throwable);
*/
sb.append("<p><b>");
// START SJSAS 6412710
sb.append(sm.getString("errorReportValve.exception",
responseLocale));
// END SJSAS 6412710
sb.append("</b> <pre>");
/* SJSAS 6387790
sb.append(stackTrace);
*/
/* GlassFish 823
// START SJSAS 6387790
sb.append(RequestUtil.filter(stackTrace));
// END SJSAS 6387790
*/
// START GlassFish 823
sb.append(HtmlEntityEncoder.encodeXSS(String.valueOf(throwable)));
// END GlassFish 823
sb.append("</pre></p>");
while (rootCause != null) {
/* GlassFish 823
stackTrace = JdkCompat.getJdkCompat()
.getPartialServletStackTrace(rootCause);
*/
sb.append("<p><b>");
// START SJSAS 6412710
sb.append(sm.getString("errorReportValve.rootCause",
responseLocale));
// END SJSAS 6412710
sb.append("</b> <pre>");
/* SJSAS 6387790
sb.append(stackTrace);
*/
/* GlassFish 823
// START SJSAS 6387790
sb.append(RequestUtil.filter(stackTrace));
// END SJSAS 6387790
*/
// START GlassFish 823
sb.append(HtmlEntityEncoder.encodeXSS(String.valueOf(rootCause)));
// END GlassFish 823
sb.append("</pre></p>");
/* GlassFish 823
// In case root cause is somehow heavily nested
try {
rootCause = (Throwable)PropertyUtils.getProperty
(rootCause, "rootCause");
} catch (ClassCastException e) {
rootCause = null;
} catch (IllegalAccessException e) {
rootCause = null;
} catch (NoSuchMethodException e) {
rootCause = null;
} catch (java.lang.reflect.InvocationTargetException e) {
rootCause = null;
}
*/
// START GlassFish 823
rootCause = rootCause.getCause();
// END GlassFish 823
}
sb.append("<p><b>");
// START SJSAS 6412710
sb.append(sm.getString("errorReportValve.note",
responseLocale));
// END SJAS 6412710
sb.append("</b> <u>");
// START SJSAS 6412710
sb.append(sm.getString("errorReportValve.rootCauseInLogs",
serverInfo, responseLocale));
// END SJSAS 6412710
sb.append("</u></p>");
}
sb.append("<hr/>");
if (serverInfo != null && !serverInfo.isEmpty()) {
sb.append("<h3>").append(serverInfo).append("</h3>");
}
sb.append("</body></html>");
return sb.toString();
}
}