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/*
* #%L
* The AIBench Shell Plugin
* %%
* Copyright (C) 2006 - 2017 Daniel Glez-Peña and Florentino Fdez-Riverola
* %%
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as
* published by the Free Software Foundation, either version 3 of the
* License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Lesser Public License for more details.
*
* You should have received a copy of the GNU General Lesser Public
* License along with this program. If not, see
* .
* #L%
*/
/*****************************************************************************
* *
* This file is part of the BeanShell Java Scripting distribution. *
* Documentation and updates may be found at http://www.beanshell.org/ *
* *
* Sun Public License Notice: *
* *
* The contents of this file are subject to the Sun Public License Version *
* 1.0 (the "License"); you may not use this file except in compliance with *
* the License. A copy of the License is available at http://www.sun.com *
* *
* The Original Code is BeanShell. The Initial Developer of the Original *
* Code is Pat Niemeyer. Portions created by Pat Niemeyer are Copyright *
* (C) 2000. All Rights Reserved. *
* *
* GNU Public License Notice: *
* *
* Alternatively, the contents of this file may be used under the terms of *
* the GNU Lesser General Public License (the "LGPL"), in which case the *
* provisions of LGPL are applicable instead of those above. If you wish to *
* allow use of your version of this file only under the terms of the LGPL *
* and not to allow others to use your version of this file under the SPL, *
* indicate your decision by deleting the provisions above and replace *
* them with the notice and other provisions required by the LGPL. If you *
* do not delete the provisions above, a recipient may use your version of *
* this file under either the SPL or the LGPL. *
* *
* Patrick Niemeyer ([email protected]) *
* Author of Learning Java, O'Reilly & Associates *
* http://www.pat.net/~pat/ *
* *
*****************************************************************************/
package bsh;
import java.io.BufferedReader;
import java.io.FileNotFoundException;
import java.io.FileReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.OutputStream;
import java.io.OutputStreamWriter;
import java.io.PrintWriter;
import java.net.HttpURLConnection;
import java.net.MalformedURLException;
import java.net.Socket;
import java.net.URL;
import java.net.URLEncoder;
/**
* Remote executor class. Posts a script from the command line to a BshServlet
* or embedded interpreter using (respectively) HTTP or the bsh telnet service.
* Output is printed to stdout and a numeric return value is scraped from the
* result.
*/
public class Remote {
public static void main(String args[]) throws Exception {
if (args.length < 2) {
System.out.println("usage: Remote URL(http|bsh) file [ file ] ... ");
System.exit(1);
}
String url = args[0];
String text = getFile(args[1]);
int ret = eval(url, text);
System.exit(ret);
}
/**
* Evaluate text in the interpreter at url, returning a possible integer
* return value.
*
* @param url the URL of the interpreter.
* @param text the text to interpret.
* @return the result value.
* @throws IOException if an error occurs during evaluation.
*/
public static int eval(String url, String text) throws IOException {
String returnValue = null;
if (url.startsWith("http:")) {
returnValue = doHttp(url, text);
} else if (url.startsWith("bsh:")) {
returnValue = doBsh(url, text);
} else
throw new IOException("Unrecognized URL type." + "Scheme must be http:// or bsh://");
try {
return Integer.parseInt(returnValue);
} catch (Exception e) {
// this convention may change...
return 0;
}
}
static String doBsh(String url, String text) {
OutputStream out;
InputStream in;
String host = "";
String port = "";
String returnValue = "-1";
String orgURL = url;
// Need some format checking here
try {
url = url.substring(6); // remove the bsh://
// get the index of the : between the host and the port
// is located
int index = url.indexOf(":");
host = url.substring(0, index);
port = url.substring(index + 1, url.length());
} catch (Exception ex) {
System.err.println("Bad URL: " + orgURL + ": " + ex);
return returnValue;
}
try {
System.out.println("Connecting to host : " + host + " at port : " + port);
Socket s = new Socket(host, Integer.parseInt(port) + 1);
out = s.getOutputStream();
in = s.getInputStream();
sendLine(text, out);
BufferedReader bin = new BufferedReader(new InputStreamReader(in));
String line;
while ((line = bin.readLine()) != null)
System.out.println(line);
// Need to scrape a value from the last line?
returnValue = "1";
return returnValue;
} catch (Exception ex) {
System.err.println("Error communicating with server: " + ex);
return returnValue;
}
}
private static void sendLine(String line, OutputStream outPipe) throws IOException {
outPipe.write(line.getBytes());
outPipe.flush();
}
/*
* TODO: this is not unicode friendly, nor is getFile() The output is
* urlencoded 8859_1 text. should probably be urlencoded UTF-8... how does
* the servlet determine the encoded charset? I guess we're supposed to add
* a ";charset" clause to the content type?
*/
static String doHttp(String postURL, String text) {
String returnValue = null;
StringBuffer sb = new StringBuffer();
sb.append("bsh.client=Remote");
sb.append("&bsh.script=");
sb.append(URLEncoder.encode(text));
/*
* // This requires Java 1.3 try { sb.append( URLEncoder.encode( text,
* "8859_1" ) ); } catch ( UnsupportedEncodingException e ) {
* e.printStackTrace(); }
*/
String formData = sb.toString();
try {
URL url = new URL(postURL);
HttpURLConnection urlcon = (HttpURLConnection) url.openConnection();
urlcon.setRequestMethod("POST");
urlcon.setRequestProperty("Content-type", "application/x-www-form-urlencoded");
urlcon.setDoOutput(true);
urlcon.setDoInput(true);
PrintWriter pout = new PrintWriter(new OutputStreamWriter(urlcon.getOutputStream(), "8859_1"), true);
pout.print(formData);
pout.flush();
// read results...
int rc = urlcon.getResponseCode();
if (rc != HttpURLConnection.HTTP_OK)
System.out.println("Error, HTTP response: " + rc);
returnValue = urlcon.getHeaderField("Bsh-Return");
BufferedReader bin = new BufferedReader(new InputStreamReader(urlcon.getInputStream()));
String line;
while ((line = bin.readLine()) != null)
System.out.println(line);
System.out.println("Return Value: " + returnValue);
} catch (MalformedURLException e) {
System.out.println(e); // bad postURL
} catch (IOException e2) {
System.out.println(e2); // I/O error
}
return returnValue;
}
/*
* Note: assumes default character encoding
*/
static String getFile(String name) throws FileNotFoundException, IOException {
StringBuffer sb = new StringBuffer();
BufferedReader bin = new BufferedReader(new FileReader(name));
String line;
while ((line = bin.readLine()) != null)
sb.append(line).append("\n");
return sb.toString();
}
}
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