--- /dev/null
+package dolda.jsvc.util;
+
+import dolda.jsvc.*;
+import java.net.*;
+import java.io.*;
+import java.util.logging.*;
+
+public class ErrorHandler implements Responder {
+ private Responder next;
+ private static Logger logger = Logger.getLogger("jsvc.error");
+
+ public ErrorHandler(Responder next) {
+ this.next = next;
+ }
+
+ protected void log(Request req, Throwable t) {
+ logger.log(Level.SEVERE, "Unhandled error in responder", t);
+ }
+
+ protected void respdebug(Request req, Throwable t) {
+ req.status(500);
+ req.outheaders().put("content-type", "text/plain; charset=utf-8");
+ PrintWriter out;
+ try {
+ out = new PrintWriter(new OutputStreamWriter(req.output(), "UTF-8"));
+ } catch(UnsupportedEncodingException e) {
+ throw(new Error(e));
+ }
+ t.printStackTrace(out);
+ out.flush();
+ }
+
+ protected void resperr(Request req, Throwable t) {
+ req.status(500);
+ req.outheaders().put("content-type", "text/html; charset=us-ascii");
+ PrintWriter out;
+ try {
+ out = new PrintWriter(new OutputStreamWriter(req.output(), "US-ASCII"));
+ } catch(UnsupportedEncodingException e) {
+ throw(new Error(e));
+ }
+ out.println("<?xml version=\"1.0\" encoding=\"UTF-8\"?>");
+ out.println("<!DOCTYPE html PUBLIC \"-//W3C//DTD XHTML 1.1//EN\" \"http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd\">");
+ out.println("<html xmlns=\"http://www.w3.org/1999/xhtml\" xml:lang=\"en-US\">");
+ out.println("<head><title>Internal error</title></head>");
+ out.println("<body>");
+ out.println("<h1>Internal error</h1>");
+ out.println("An error occurred on the server processing your request.");
+ out.println("</body>");
+ out.println("</html>");
+ out.flush();
+ }
+
+ protected boolean debug(Request req, Throwable t) {
+ SocketAddress rem = req.remoteaddr();
+ return((rem instanceof InetSocketAddress) && ((InetSocketAddress)rem).getAddress().isLoopbackAddress());
+ }
+
+ protected void handle(Request req, Throwable t) {
+ log(req, t);
+ if(req instanceof ResettableRequest) {
+ ResettableRequest rr = (ResettableRequest)req;
+ if(rr.canreset())
+ rr.reset();
+ }
+ if(debug(req, t))
+ respdebug(req, t);
+ else
+ resperr(req, t);
+ }
+
+ public void respond(Request req) {
+ try {
+ next.respond(req);
+ } catch(Throwable t) {
+ handle(req, t);
+ }
+ }
+}
Dolda2000 GitWeb / jsvc.git / commitdiff