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package org.apache.catalina.ssi;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.PrintWriter;
import org.apache.catalina.util.IOTools;
/**
* Implements the Server-side #exec command
*
* @author Bip Thelin
* @author Amy Roh
* @author Paul Speed
* @author Dan Sandberg
* @author David Becker
* @version $Revision: 1.4 $, $Date: 2007/05/05 05:32:19 $
*/
public class SSIExec implements SSICommand {
protected SSIInclude ssiInclude = new SSIInclude();
protected final static int BUFFER_SIZE = 1024;
/**
* @see SSICommand
*/
public long process(SSIMediator ssiMediator, String commandName,
String[] paramNames, String[] paramValues, PrintWriter writer) {
long lastModified = 0;
String configErrMsg = ssiMediator.getConfigErrMsg();
String paramName = paramNames[0];
String paramValue = paramValues[0];
String substitutedValue = ssiMediator.substituteVariables(paramValue);
if (paramName.equalsIgnoreCase("cgi")) {
lastModified = ssiInclude.process(ssiMediator, "include",
new String[]{"virtual"}, new String[]{substitutedValue},
writer);
} else if (paramName.equalsIgnoreCase("cmd")) {
boolean foundProgram = false;
try {
Runtime rt = Runtime.getRuntime();
Process proc = rt.exec(substitutedValue);
foundProgram = true;
BufferedReader stdOutReader = new BufferedReader(
new InputStreamReader(proc.getInputStream()));
BufferedReader stdErrReader = new BufferedReader(
new InputStreamReader(proc.getErrorStream()));
char[] buf = new char[BUFFER_SIZE];
IOTools.flow(stdErrReader, writer, buf);
IOTools.flow(stdOutReader, writer, buf);
proc.waitFor();
lastModified = System.currentTimeMillis();
} catch (InterruptedException e) {
ssiMediator.log("Couldn't exec file: " + substitutedValue, e);
writer.write(configErrMsg);
} catch (IOException e) {
if (!foundProgram) {
//apache doesn't output an error message if it can't find
// a program
}
ssiMediator.log("Couldn't exec file: " + substitutedValue, e);
}
}
return lastModified;
}
} |