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ExportRestriction.javaAPI DocExample1618Tue Jan 25 10:45:14 GMT 2000None

ExportRestriction

public class ExportRestriction extends HttpServlet

Fields Summary
Constructors Summary
Methods Summary
public voiddoGet(javax.servlet.http.HttpServletRequest req, javax.servlet.http.HttpServletResponse res)

    res.setContentType("text/html");
    PrintWriter out = res.getWriter();

    // ...Some introductory HTML...

    // Get the client's hostname
    String remoteHost = req.getRemoteHost();

    // See if the client is allowed
    if (! isHostAllowed(remoteHost)) {
      out.println("Access <BLINK>denied</BLINK>");  // filter out the blink!
    }
    else {
      out.println("Access granted");
      // Display download links, etc...
    }
private booleanisHostAllowed(java.lang.String host)

    return (host.endsWith(".com") ||
            host.endsWith(".edu") ||
            host.endsWith(".net") ||
            host.endsWith(".org") ||
            host.endsWith(".gov") ||
            host.endsWith(".mil") ||
            host.endsWith(".us") ||
            host.endsWith(".ca") ||
            (host.indexOf('.") == -1));  // no domain, assume OK