/*****************************************************************************
* *
* 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 (pat@pat.net) *
* Author of Learning Java, O'Reilly & Associates *
* http://www.pat.net/~pat/ *
* *
*****************************************************************************/
package bsh;
import java.io.*;
import java.net.*;
import java.text.*;
/**
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.
*/
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();
}
}