/*****************************************************************************
* *
* 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 org.gjt.sp.jedit.bsh;
import java.io.*;
import java.net.*;
/**
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.
*/
@SuppressWarnings("unchecked")
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.
*/
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?
*/
@SuppressWarnings({"deprecation"})
static String doHttp( String postURL, String text )
{
String returnValue = null;
StringBuilder sb = new StringBuilder();
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
{
StringBuilder sb = new StringBuilder();
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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