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package test;
/**
* nudge4j's demo: A stand alone Java 8 program that you can just run.
**/
public class DemoNudge4j {
public static void main(String args[]) {
System.out.println("Demo nudge4j");
//
// below is the code copied from
// https://lorenzoongithub.github.io/nudge4j/
//
// The latest code snippet is always available here:
// https://lorenzoongithub.github.io/nudge4j/dist/n4j.snippet.java
//
// Always check you are running the latest code by visiting the project
// https://github.com/lorenzoongithub/nudge4j
//
//
// nudge4j:begin
(new java.util.function.Consumer<Object[]>() { public void accept(Object args[]) {
try {
javax.script.ScriptEngine engine = new javax.script.ScriptEngineManager().getEngineByName("JavaScript");
engine.put("args", args);
String p = "com.sun.net.httpserver.";
Class<?>
HH = Class.forName(p+"HttpHandler"),
HE = Class.forName(p+"HttpExchange"),
HD = Class.forName(p+"Headers"),
HS = Class.forName(p+"HttpServer");
java.lang.reflect.Method
m0 = HE.getMethod("getRequestURI"),
m1 = HE.getMethod("getResponseHeaders"),
m2 = HE.getMethod("sendResponseHeaders", int.class, long.class),
m3 = HE.getMethod("getResponseBody"),
m4 = HS.getMethod("create", java.net.InetSocketAddress.class, int.class),
m5 = HS.getMethod("createContext", String.class, HH),
m6 = HS.getMethod("setExecutor", java.util.concurrent.Executor.class),
m7 = HS.getMethod("start"),
m8 = HD.getMethod("set", String.class, String.class),
m9 = HE.getMethod("getRequestBody"),
mA = HE.getMethod("getRequestHeaders");
Object server = m4.invoke(null, new java.net.InetSocketAddress(
java.net.InetAddress.getLoopbackAddress(), (int) args[0]), 0);
m5.invoke(server, "/", java.lang.reflect.Proxy.newProxyInstance(
HH.getClassLoader(),
new Class[] { HH },
new java.lang.reflect.InvocationHandler() {
java.nio.charset.Charset UTF8 = java.nio.charset.StandardCharsets.UTF_8;
byte data[] = new byte[10000];
void send(Object httpExchange,byte array[],int max, String contentType) throws Exception {
m8.invoke(m1.invoke(httpExchange), "Content-Type",contentType);
m2.invoke(httpExchange, 200, max);
try (java.io.OutputStream os = (java.io.OutputStream) m3.invoke(httpExchange)) {
os.write(array,0, max);
}
}
@SuppressWarnings("rawtypes")
public synchronized Object invoke(Object pxy, java.lang.reflect.Method m, Object[] params) throws Exception {
Object httpExchange = params[0];
String uri = m0.invoke(httpExchange).toString();
if (uri.startsWith("/js")) {
java.util.Map requestHeaders = (java.util.Map)mA.invoke(httpExchange);
if (requestHeaders.containsKey("Origin")) {
String origin = ""+((java.util.List)requestHeaders.get("Origin")).get(0);
if (origin.equals("http://localhost:"+args[0]) == false &&
origin.equals("http://127.0.0.1:"+args[0]) == false) return null;
} else if (requestHeaders.containsKey("Referer")) {
String referer = ""+((java.util.List)requestHeaders.get("Referer")).get(0);
if (referer.startsWith("http://localhost:"+args[0]) == false &&
referer.startsWith("http://127.0.0.1:"+args[0]) == false) return null;
} else return null;
byte array[];
try (java.io.Reader r = new java.io.InputStreamReader( (java.io.InputStream) m9 .invoke(httpExchange), UTF8 )) {
array = (""+engine.eval(r)).getBytes(UTF8);
} catch (Exception e) {
java.io.OutputStream os = new java.io.ByteArrayOutputStream();
e.printStackTrace(new java.io.PrintStream(os));
array = ("err::"+os).getBytes(UTF8);
}
send(httpExchange,array,array.length,"text/plain");
return null;
}
if ("/".equals(uri)) uri ="/index.html";
String url = "https://lorenzoongithub.github.io/nudge4j/localhost.port"+uri;
java.net.HttpURLConnection c = (java.net.HttpURLConnection) new java.net.URL(url).openConnection();
c.setRequestMethod("GET");
int responseCode = c.getResponseCode();
if (responseCode != 200) {
m2.invoke(httpExchange,responseCode,-1);
return null;
}
int count =0;
try (java.io.InputStream is = c.getInputStream()) {
for (int b=is.read();b!=-1;b=is.read()) data[count++] = (byte) b;
}
send(httpExchange,data, count, (
(uri.endsWith(".ico")) ? "image/x-icon" :
(uri.endsWith(".css")) ? "text/css" :
(uri.endsWith(".png")) ? "image/png" :
(uri.endsWith(".js")) ? "application/javascript" :
"text/html"));
return null;
}
}
));
m6.invoke(server, new Object[] { null });
m7.invoke(server);
System.out.println("nudge4j serving on port:"+args[0]);
} catch (Exception e) {
throw new InternalError(e);
}
}}).accept( new Object[] { 5050 });
// nudge4j:end
}
}
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